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Anyone whom excessively enjoy's sucking mens' reproductive organs. Usually used to refer to trans-sexuals but occasionally homosexual men as well. Also see cocksucker, cum-guzzler.

The derevation of this word comes from the similarity between trying to eat a slice of pizza all in one bite and the act of giving felacio.
"I'm pretty sure that homo in our english class is one hell of a slice-fool"

"Haha yea, he just can't get enough of it. I hear 'the slice fool' is even his nickname!"
by Joe Schmiley May 02, 2005
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