jack vegan

Much like a jack mormon who sometimes engages in drinking alcohol, caffeine and even premarital sex - much to the disapproval of the Church of Jesus Christ of Latter Day Saints - a jack vegan is a vegan who every now and then cheats on his or her veganism by consuming dairy products such as cheese.

Joslyn: Oh no we can't go there! I'm vegan so there's nothing for me to eat at that murder and animal torture factory!!

Tony: Bullshit you're a vegan Joslyn! I saw you crush a slice of cheese pizza after we got out the club the other night. You may eat way less dairy than my vegetarian ass but you're like a jack vegan if anything.