Thank you all!
I never knew what the last word of the song was in the add, so all my searchs to find the name of it were fruitless. Until I came here!
I found out that the song (performed by one of my favorites, MxPx) is called 'Well Adjusted' Yea! My search is over.
And, I'd just thought I'd point out, that the guys in MxPx are Christian, so they hopefully wouldn't sing a song about masturbating...Plus all of them are married...