Occurs when you sit on a pubic or office toilet that is gender specific for men and the toilet seat is warm, hot or sticky from the man that just left.
Normally an unused office toilet is cold to the touch but a man ass toilet seat is warm, hot, or sticky.
A supposed woman that has man features but is known for her male like Booty. MANASS also describes a woman with Muscle manlike ass shape which may resemble Male Ass
Showgirls: She got a nice set of titties....oh wait....hell no look at the Manass on that Ho Cake.