1. assfuck - Noun
2. assfuck - Verb
(Canada, US, vulgar) Sodomy, anal sex, an act of anal intercourse.
(Canada, US, vulgar) A jerk; an obnoxious person.
(Canada, US, vulgar) An act of stunning betrayal.
(Canada, US, vulgar) To engage in anal intercourse.
(Canada, US, vulgar) To betray.
Source: en.wiktionary.org