One who is not only an asshole, but has a tendency to have outrageous and asinine outbursts
Messley Snipes owed his brother money, and was forced by him to shout aloud on the bus, "I am an Asshatter!" to absolve his debt. (true story)
At the Taqueria, a drunken angry hipster was screaming obscenities at the amiable Hispanic cashier. I was forced to kick his asshatter ass.