means a person(usually a man) who is racist , sexist,dirty-mouthed(like a pig) ,is violant and the only thing there head is useful for is headbutting people with there thick skull(like a rhino would with its horn)
Daniel: Hey dude, you were so pissed last night, you porked a rhinocopig.
Tristan: Yeah I know. She gave me a nasty gash on my back and nob-rot.
Daniel: I feel sorry for yousorry dude hug