The sensation of your ass going to sleep while having a greasy and unwipeable ass usually occuring after consumption of large quantities of fried or fatty foods. A result of oily anal discharge, leakage, or extremely tacky fecal matter. Often accompanied by, or preceded by, 'The Itis.'
F-ing despises lazy a$$ legal administrative assistants that pay no mufu-in attention to simple legal details. I swear this is the type of person that forgets to wipe their a$$ after a case of the MUDD BUTT ITIS and doesn't realizes it until the crust build up bites back.