When your ass is most active at inconvenient times.
Scenario 1: You are on a bus that is full, but silent and you really need to let one rip
You (Silently talking to self): "My ass is an asshole at the current time..." *PRRRRRT*

*1 million eyes in your direction*
You (Talking aloud): "Shit..."
by I-Am-The-Cold July 24, 2014
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