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1.
Quelm is usually used out of laziness, or when the person wants to be intentionally vague and/or mysterious. It's origins lie in the Darling town in the Land of Prince Bishops, from the wise old sage Rubens Mhorrow.
"I've just been quelming my car."

-"What time are you coming over?"
-"Quelm"
by Buentes August 29, 2005