When relatives make a long-distance visit to meet a newborn, they often find themselves in a house where little ones have surprisingly started growing up fast.
Entering a room once filled with toys, they now see a teenage kid. This person asks how the kid has grown up so much, reflecting on the situations and different stages of life. Their expression shows a mix of amazement and nostalgia.
In these situations, different expressions and responses from parents show the transition from newborn to teenager.
If a relative ever comments, ‘Your kids grow faster’, use the responses below.
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How To Respond To “They Grow Up So Fast”
Hearing ‘They grow up so fast’ can remind us of the fascinating challenges of aging. Acknowledge this stage with a humorous and lighthearted touch, perhaps joking about the fountain of youth.
Focus on shining qualities like their sense of humor or loving personality.
Responses To “They Grow Up So Fast” As A Parent
Responses Adding a Positive Spin
When you respond with these sunny lines, it’s like you’re giving out mini rays of sunshine. It makes people feel good and brings a smile to their faces.
1. “Their growing pace is astonishing, and I feel blessed to be part of it.”
2. “Absolutely, they don’t stay young for long. Every moment is precious as parents.”
3. “It’s a relative concept, but yes, watching them grow up does seem to happen in the blink of an eye.”
4. “Time flies indeed. One day they’re little ones, and the next, they’re all grown up!”
5. “Indeed, the days are long but the years fly like a breeze!”
Example:
You’re at a parent-teacher meeting. The teacher’s all praises about how your child’s doing awesome in school. You feel that proud parent vibe. And then, a fellow parent remarks, ‘They grow up so fast, don’t they?’ You smile, nod, and say something like, ‘Time flies indeed. One day they’re little ones, and the next, they’re all grown up!’
Responses Reflecting on Parenthood
Parenthood is this wild, beautiful ride, but it’s also scary because it makes you face the speed of life. It’s not just about the kids growing; it’s about time slipping through your fingers.
These replies are like little reminders, little flags saying, ‘Hey, pay attention, these moments are precious.’
1. “Yes, they really do. One minute you’re changing diapers, the next, they’re off to college.”
2. “Absolutely, time didn’t wait for anyone. Feels like just yesterday they were learning to walk.”
3. “Truly, they don’t stay little for much longer. They’re growing faster than a summer garden.”
4. “They’re growing up so fast, it scares me sometimes how quickly life moves.”
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Example:
You know, those moments when you’re at a family gathering or maybe just hanging out with friends who’ve seen your kids grow. They look at your munchkins, probably doing something ridiculously grown-up, and outcomes that line.
It’s like an unspoken rule, a parent nod to the crazy, fast-forward nature of raising kids.
Slightly Sarcastic/Playful Responses
Well, first off, it’s fun. Life’s too serious as it is, so why not add a bit of humor? Additionally, it facilitates connections with others. Everyone can relate to the shock of how quickly kids grow.
1. “Older and wiser every day – at this rate, they’ll be teaching us how to use the net soon.”
2. “Why can’t we just keep them small? Now, they’re already planning their college majors!”
3. “Why do they grow up so fast? Feels like they went from diapers to diplomas in the blink of an eye.”

Example:
You’re at a family gathering. Your little nephew, once a tiny tot, is now lecturing everyone on how to use the latest apps on their smartphones. Someone drops the ‘They Grow Up So Fast’ line.
You, with a twinkle in your eye, hit back with, ‘Older and wiser every day – at this rate, they’ll be teaching us how to use the net soon.’ It’s a cheeky way to acknowledge how kids these days seem to be born with a tech manual in their hands.
Responses To “They Grow Up So Fast” As A Teenager
Acknowledging Responses
Everyone’s been through growing up. When you acknowledge your growth using these, it gives you a confidence boost.
It’s very similar to patting yourself on the back.
1. “Yeah, it’s like my body and mind just decided to hit fast-forward!”
2. “True, feels like just yesterday I was little, and now look at me!”
3. “I can scan the room now without tiptoeing, definitely grown up.”
4. “Even you didn’t realize how quickly time passed!”
Example:
Flash forward to your school reunion. Teachers and old pals are there. Someone’s bound to say it, right? You respond with, ‘True, feels like just yesterday I was little, and now look at me!’
It’s a perfect mix of nostalgia and pride. Shows you’re aware of how much you’ve changed.
Assertive/Confident Responses
Confidence attracts respect, and respect is what you need when you’re growing up fast.
When you use these assertive lines, you’re telling the world you’re not just some kid; you’re self-aware and proud of your growth.
1. “I’m embracing every change, whether it’s my height, weight, or intelligence.”
2. “Seems like just yesterday I was born, and now I’m surpassing everyone’s expectations, aren’t I?”
3. “Who knew I’d surpass my own expectations?”
Example:
In a family gathering, everyone’s fussing over how tall you’ve gotten, almost like you’re a bamboo shoot or something. That’s when you drop the line, ‘I’m embracing every change, whether it’s my height, weight, or intelligence.’
Why? Because it’s like you’re saying, ‘Yeah, I’m growing, and I’m owning it.’
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Playful/Humorous Responses
You’re not just any teenager; you’re the one with the quick wit! And being honest, it feels pretty great to have the grown-ups chuckling and thinking, ‘Hey, this kid’s got spunk!’
1. “Was I really born yesterday? Because that’s how fast I’m growing!”
2. “I’m growing? Must be the extra sleep every day. Or maybe the midnight snacks.”
3. “Can we stop the clock? I’m not ready for grown-up bills yet.”
4. “I guess I should stop growing or I won’t fit in my family photos anymore!”
Example:
You’re at a gathering, and Auntie or Uncle So-and-So, who last saw you when you were knee-high to a grasshopper, drops the classic ‘They Grow Up So Fast’ line.
That’s your cue! Whip out one of these gems like ‘Was I really born yesterday? Because that’s how fast I’m growing!’.
Redirecting Responses
You’re not just growing in age but also in attitude and experience. Plus, it’s a smooth shift from just talking about age to what you’re actually doing with your time.
1. “Feels like just yesterday I was learning to tie my shoes. Time flies when you’re having fun!”
2. “Well, they say good things never last long. But, no problem, I’m enjoying the ride while it lasts.”
3. “I just hope I can make my parents proud in this short time. They’ve given me so much.”

Example:
Your aunt drops the classic ‘They grow up so fast’ line while eyeing you. It’s like a green light to throw in these redirecting responses.
Why? Coz it shifts the convo from just nodding about growing up to something more upbeat and personal.
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Final Thoughts
When people comment on how kids have grown so much and fast, it’s good to have replies ready. Direct and positive responses prove you know what they mean. Sarcastic comebacks can be appropriate in a lighthearted case.
If someone says your child has put on weight or gotten taller, they might just notice their growth. Refer to this as a sign of maturity and take it as compliments or criticism.
No need to worry, it’s normal to handle these comments with mature responses.