I am not sure but I know the words to this song.

I was swimming in the water of the ocean.. And all of a sudden I dropped my potion.So I dropped my head then 13 min I was in bed.I asked the shark.. mr shark you live in the ocean would you help me find my magic potion..

Does anyone know this old 80's rap tune?

Line something like that in Dr. Jeckyll & Mr Hyde's AM PM

YouTube - Dr. Jeckyll & Mr. Hyde - A.M. P.M. (1984) (http://www.youtube.com/watch?v=JDWyx4s-GKE)

Thanks tf7426... That is it! You sure know your old rap songs :-)