(1) When one gets caught doing something stupid, embarassing, or anything of a private nature by your parents. (2) Also, when one's parents call you and prevent you from doing something enjoyable.
"He can't do anything tonight because he got schrumpfed by his mom last night while he was mastrubating."
(N) Sh-KRUMP : A combination bowel movement of a shit, a crap, and a dump. Usually coincides with a long night of drinking followed by a trip to a taco joint.
"I really need to take a Shcrump. Goddamn Las Palapas." Other variations include Shcrumping, and in some rare cases, Donald Trumping. I.e. "I think someone Donald Trumped on the coats."