作詞：Julian Bunetta, Ed Drewett, John Ryan
作曲：Julian Bunetta, Ed Drewett, John Ryan
[Verse 1: Niall]
When I'm fat and old
And my kids think I'm a joke
Because I move a little slow when I dance
[Hook: Liam]
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
[Verse 3: Louis]
When I'm fat and old
And my kids think I'm a joke
Because the stories that I've told
I tell again and again
[Hook: Zayn]
I can count on you
after all that we've been through
Because I know that you'll 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
[Bridge: Harry]
When I can hardly walk and my hair is falling out
We'll still stay up 'til morning
We'll throw an 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
