Everybody have fun tonight.
'Cause Johnny's well hung tonight.

The story:

I was at a drunken house party and were we singing along with the song...and I was the loudest (oops). EVERYBODY within earshot stopped singing and looked at me, and then busted out laughing. The humiliation was made even worse by the fact that my boyfriend at the time was named John, and everyone thought I sang it to advertise his, er, endowments!