Top Definition
noun - A traveling wave of notoriously contagious laziness, generally initiated by one or more lazy individuals who act as a catalyst for a chain reaction of sham.

Currently, a shamwave in the vacuum of space is the fastest object in the known universe.
Bert: "Man, I don't feel like working today."

Jared: "Yeah, Dan started a shamwave early this morning so we're all going for beer at lunch, you in?"

Bert: "Is a frog's ass watertight?"

Jared: "Umm....I don't know..."

Bert: "Yes, I am in."
by dirtytree December 13, 2007
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