1. One who is infatuated with the penis or multiple penises, sometimes simultaneously.
2. One who enjoys randomly grabbing people's penises; faggot
"You are a penisizer"
"Would you like to be penisized?"
1. (noun) Somebody that likes to penisize and does so quite frequently. Can be male or female.
2. (noun) Derogatory term for "homosexual."
1. Dude, he just grabbed my crotch! What a penisizer!
2. Back off, ya penisizer!