An increment of time, lengthy in nature.
After I ran over a herd of tree huggers, I served a long ass in Pelican Bay.
by Jaggo March 23, 2004
Buttocks that significantly longer than they are wide, as to resemble an open hot dog bun.
Check out that chick playing pool over there. She's got some serious long ass. Where do you even find jeans that fit?
by Chip Z'hoyy January 01, 2012