The act of having sex with another person in order to wish
said person good
fortune. usually done before
exams, departures, or future confrontations with someone/something. Plus it rhymes. :)
Rndm Chick: Fuck, I'm totally gonna fail my driving exam tomorrow. Boyfriend: Well I think you'll do fine, but a
good luck fuck couldn't hurt right? *
5 Minutes Later* Rndm Chick: Im so failing....