You call them a Baby Jay. In fact, from here on out, I'm calling all quitters Baby Jays in honor of the godlike BJ Penn. He deserves it after all he's proved in the ring.
Did you here Bob is going to AA meetings now?
Yeah man, he's such a Baby Jay...
Steve walked out of work this morning while we were slammed! That fvcking Baby Jay!
You could also use it officially, like when folks drop out of high school, instead of getting their General Education Diploma they could get a Baby Jay Diploma