[Intro]
One, two, three, four
[Verse 1: Niall & Liam]
When I'm fat and old and my kids think I'm a joke
Cause I move a little slow when I dance
I can count on you after all that we've been through
Cause I know that you'll always understand
[Chorus: All]
I won't act my age, no I won't act my age
No, I'll still feel the same around you, hey
[Verse 2: Louis & Zayn]
When I'm fat and old and my kids think I'm a joke
Cause the stories that I told, I tell again and again
I can count on you after all we got up to
Cause I know that you truly understand
[Chorus: All]
I won't act my age, no I won't act my age
No, I'll still feel the same around you
I won't act my age, no I won't act my age
No, I'll still feel the same and you will too, hey
[Bridge: Harry]
When I can hardly walk and my hair is falling out
We'll still stay up 'til morning, we'll throw the after party, oh yeah, oh yeah
[Chorus: All]
I won't act my age, no I won't act my age
No, I'll still feel the same around you
I won't act my age, no I won't act my age
No, I'll still feel the same and you will too, hey