Top definition
The act of feigning enthusiasm.

Usually sarcastic, but can sometimes be a means of gratifying a dull anecdote.
"I had to use my unthusiasm to get rid of that guy."

"Hey man, no need to use unthusiasm on me."
by Jedimintrick October 25, 2006
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The vengeful act of crapping on a lover's chest while they sleep.

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2
Lack of enthusiasm.
Either sarcastic enthusiasm, or from boredom.
1) Woop. Wa-hey. Yeah. This is fun.
2) Nice going with the unthusiasm there.
by Blue Jack October 18, 2009
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

Buy the plush