It’s your birthday 
it’s your birthday 
it’s your birthday 
so have a good time, ya have a good time 

now everybody's here 
to give you love and cheer 
to celebrate your life 
cause you're the star tonight 

it’s your birthday (happy) 
it’s your birthday (birthday) 
it’s your birthday (happy) 
so have a good time (birthday) ya have a good time 
let's have a good time (it's ok) we're gonna party like it’s 1999 (to get drunk) 
and you know we don't give a...hmmm