I was a papaya, now I'm a spinach.

The story:

Sang this, very loudly, with friends at a party. We had no idea what the lyrics were supposed to be, and these were funny, so we sang 'em. Once we stopped laughing (and everyone else stopped laughing in our general direction, which may have nothing to do with the lyrics, frankly) its actually kinda obvious what the lyrics are, if you don't have the speakers turned up to eleven.