1 definition by Vinny1

Top Definition
1. To headbutt someone.
2. To prepare to or attempt to headbutt someone.
3. One who frequently engages in headbutting

(acceptable as either lower or upper case)
"He just pulled a rupkey on that guy"
"Looks like Winkler just got rupkied"
Person 1: Man, he fights dirty, he just keeps headbutting people.
Person 2: Yeah, he's such a Rupkey
by Vinny1 July 09, 2006

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