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!"
A friend who slimes all over the chat girls in your community, doing anything to become best friends with them and slime. Spend hours on social media trying to slime his way into little girls panty's
friend : Checkout "slimedawg", he's sliming all over the place