A particularly nasty, crusty, fast advancing rash or skin eruption. For some reason it appears to strike only chrome-plated, 360 degree assholes, while leaving the virtuous unscathed. By so doing, it restores ones faith in the mysteries of life.
Alarmed Fellow:"Don't sit in that chair---Mayson just got up from there, and he has the galloping crud!"
Unconcerned Grand Guy:"Don't worry--Mayson's a dirt-bag, but I have my aura of righteousness to protect me."
An amusing slang term for any of a number of venereal diseases. While the word is most commonly used in reference to gonorrhea and chlamydia, it can describe any STD other than HIV/AIDS. Also known as knob rot and crotch rot. Extreme cases may be classified as Rampant Galloping Cock Rot.
What the fuck? I bang a couple of hoes, and now I've got the galloping knob rot!