1. skull fuck - Noun
2. skull fuck - Verb
skull fuck (third-person singular simple present skull fucks, present participle skull fucking, simple past and past participle skull fucked)
Alternative spelling of skull-fuck
(vulgar, slang) To actively sexually penetrate someone's mouth; to have vigorous oral sex.
(vulgar, slang) To sexually penetrate someone's eye socket.
skull-fuck (plural skull-fucks)
an instance of skull-fucking
skull-fuck