Worst song ever written? Gosh that's a good one..there are alot..
but I can think of one that drives me insane..
and on top of it written by Paul Mc Cartney..

"Somebody's knockin' on the door,
Somebody's ringin' the bell
Do me a favor, open the door
Let 'em in."

do me a favor take that song and throw it outside in the rain with that cake!