1.One who's level of intelligence is comparable to that of their own ass.
2.One who's actions suggest that they might be thinking with their own ass, though it, like their brain, lacks the ability to make intelligent decisions.
Someone who is such a complete dumbass, that they should have a PhD in being retarded. Dumass is one letter short of Dumbass, which makes it funnier when they don't realize what you're talking about.
Dr. Dumass over there, pranked called her school from her home phone without using *67.
By Clair
Re Dumass
It is a person that was a dumass then wasent now is again it may also be said as an insult like retard boy.
Jim: I remember when i was a dumass now im not those were the days but then again i shit in peoples cars for fun.
Jacob: Wow your stupid if u still do that even after 4 years then your a re dumass
