The truth is bulletproof
There’s no fooling you
I don't dress the same
 
Me and who you say
I was yesterday
Have gone our separate ways
 
Left my living fast
Somewhere in the past
'Cause that's for chasing cars
 
Turns out open bars
Lead to broken hearts
And going way too far
 
I know I used to be crazy
I know I used to be fun
You say I used to be wild
I say I used to be young
 
You tell me time has done changed me
That's fine, I’ve had a good run
I know I used to be crazy
That’s 'cause I used to be young
 
Take one, pour it out
It’s not worth crying about
The things you can't erase
 
Like tattoos and regrets
Words I never meant
And ones that got away
 
Left my living fast
Somewhere in the past
And took another road
 
Turns out crowded rooms
Empty out as soon
There’s somewhere else to go, oh
 
I know I used to be crazy
I know I used to be fun
You say I used to be wild
I say I used to be young
 
You tell me time has done changed me
That's fine, I’ve had a good run
I know I used to be crazy
That’s 'cause I used to be young 
 
Oh...
 
I know I used to be crazy
Messed up but god was it fun
I know I used to be wild
That’s 'cause I used to be young
 
Those wasted nights are not wasted
I remember every one
I know I used to be crazy
That's 'cause I used to be young
 
You tell me time has done changed me
That's fine I’ve had a good run
I know I used to be crazy
That’s 'cause I used to be young