Rum plum

That little ball of poop that hangs from your ass. Also known as a dinkle berry.

Guy 1: I just threw you a rum plum. Don't eat it
Guy 2: that's nasty bro

stinky plum

Think blumpkin, but different. The chick is the one taking a dump, but you're still the one getting your dick sucked. It's never your first choice, or second for that matter. Its more of a last resort.
If she's not doing a good enough job just go ahead and face fuck her, its a completely acceptable variation and probably better for both of you.

Jaclyn's alarm didn't go off and she was running the risk of not making her flight. Anthony knew that if he wanted to get his dick sucked that morning he'd have to settle for a stinky plum.