If you haven't heard the original song by Plain White T's, then you must be living under a rock. It's on every radio station over here, and I guess it's the same in America.
Anyway, there are a few spoofs going around, but these two are my personal favourites.
Lawyer Version - "My Client Delilah"
The song from the view of Delilah's lawyers, telling Mr. Higgenson (lead singer of PWT) that a third restraining order has been taken out against him.
Stalker Version
A satlker breaks into Delilah's house and sings a very dark and creepy song... "I'm a thousand miles away from you or maybe in your closet with a camera, I like to watch you when you sleep".