When your brain can't decide whether you want to hug / snuggle / fuck - so you attempt all of them at the same time. Usually caused by a combination of loved-up affection and raw lust
Sara stayed over last night and we hugglefuck'd for hours - I'm so happy, and exhausted!
What Malfoy shouts at the good guys at the end of "adult" version of Harry Potter and the Deathly Hallows.
Draco caught sight of Harry, Ron, Hermione and Ginny staring at him, nodded curtly and shouted "what yo' mudblood asses doin' starin' at me mugglefuckers!"