A person who does not suck cock, but merely milks cum into his/her mouth.
v. jizzjacked, Having been promised something or agreed to perform a task and then the person reneges, doesn't show, etc.
I was counting on a slow, warm, wet BJ but s/he turned out to be only a jizzjacker.
I bought tickets for them and they didn't pay me. I've been jizzjacked.