Mine is 'Stacy's Mom'... some of the lyrics to the song work pretty well. I waited more than two years, she's got it going on... and so on.
It also leads lots of double entendre's... I can't think of all of them of the top of my head...
Stacy's Mom is hot(on a summer day).
I'm warming up Stacy's Mom(on a cold day, remotely).
Stacy's Mom is fast.
Stacy's Mom has nice curves.
Stacy's Mom is taking me home.
Stacy's Mom is giving me a ride.
For some reason, my wife doesn't really like the name Stacy's Mom