Jack 'n' cock

A play on words for Jack 'n' Coke

Meaning someone is so intoxicated that they will do homosexual acts. Usually related to someone getting so drunk on Jack Daniel's whiskey (other beverages will do) that they're willing to fuck another guy or be fucked by another guy.

Usually this is applied to homos-in-denial who just can't comprehend they like dick, so they get that little drunken push to prove they're gay since being drunk can show your true beliefs.