It's by MxPx and it's called Well adjusted! I was wondering for a long time to!

: Ok I think its a diet pepsi add that features a father and son covered in mud at a concert and the band is singing somthing like 'Am I the one thats going crazy I'm just so tired of masturbating' - anyone know who sings this or what the name of it is?
> Thanks!
: Abby