Top definition
lacking giving a shit, such as the difference between taking home your ex and taking home a new girl. Can also be used in many situations involving boredom and mundane activities.
You seem a little unthusiastic about helping me clean out my basement.

Your obvious unthusiasm tells me you'd rathher pork that girl than go home with me again.
by IWL 67 April 25, 2011
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