Boa Butt
Excessive sweating of the ass that leads to visible sweat stains on the backside of ones pants or shorts.  Also a synonym for shitty, screw-up, fuck-up, fail, dissapoint, or neglect.
Boa Butt is doing anything outside when its warm that leads to excessive sweating of the ass such as playing golf, walking, or engaging in a sport.  The defintino can be expanded to include anything that is bad and is comparable to the suck that is swamp ass.  