Sorry the lyrics are probably wrong because I couldn't find them anywhere!
If you tune your guitar down one whole step I think it's in the same key that they sing it in

     
   


            
  Hey girl I'm

           
 waiting on ya
            
  I'm waiting 

 
on ya
             
  Come on and 

             
let me sneak y

   
ou out
            
  And have a c

elebration
   
   celebration
            
  The music up

             
 the windows d

own


          
  Yeah, we'll 

             
be doing what 

   
we do
           
Just pretendin

             
g that we're c

ool
       
And we know it

's true
          
  Yeah, we'll 

             
be doing what 

   
we do
           
Just pretendin

            
g that we're c

ool
     
So tonight


             
Let's go crazy

              
 crazy crazy c

             
razy 'til we s

      
ee the sun
             
I know we only

              
 met but let's

            
 pretend it's 


love
             
And never neve

              
r never stop f

      
or anyone
             
Tonight let's 

    
get some

 And live whil

e we're young


        
      
        
          
Tonight let's 

   
get some

And live while we're young


       


            
  Hey girl it'

           
s now or never
            
  now or never

 
             
  Don't over t

             
hink just let 

  
it go
            
  And if we ge

t together
   
  get together
            
  Don't let th

              
e pictures lea

        
ve your phone


          
  Yeah, we'll 

             
be doing what 

   
we do
           
Just pretendin

            
g that we're c

ool
     
So tonight


             
Let's go crazy

              
 crazy crazy c

             
razy 'til we s

      
ee the sun
             
I know we only

              
 met but let's

            
 pretend it's 


love
             
And never neve

              
r never stop f

      
or anyone
             
Tonight let's 

    
get some

 And live whil

e we're young


        
      
        
          
Tonight let's 

   
get some

And live while we're young


                 
            
And girl  you 

           
and I      we'

  
re 'bout to ma

ke some memori

es
            
  Tonight   I 

              
wanna live whi

           
le we're young

   
   We

wanna live while we're young


             
Let's go crazy

              
 crazy crazy c

             
razy 'til we s

      
ee the sun
             
I know we only

              
 met but let's

            
 pretend it's 


love
             
And never neve

              
r never stop f

      
or anyone
             
Tonight let's 

    
get some

 And live whil

e we're young

             
crazy crazy cr

              
azy crazy 'til

          
 we see the su

n
             
I know we only

              
 met but let's

            
 pretend it's 


love
             
And never neve

              
r never stop f

      
or anyone
             
Tonight let's 

    
get some

 And live whil

e we're young

        
      
        
          
Tonight let's 

   
get some

And live while we're young