Karillion's definitions
Although the standard definition is one who has their head so far up their ass that they may as well be wearing their ass as a hat. I also like to imagine it as being someone being so useless that they are just as or moresoe useless as a hat that you wear on your arse. obviously nudist may disagree and wouldnt mind saving their asses from sun burn, but to them i say; your not a real nudist!
by Karillion December 8, 2007
 Get the Ass Hatmug.
Get the Ass Hatmug.