A particularly nasty, crusty, fast advancing rash or skin eruption. For some reason it appears to strike only platinum-plated, 360 degree assholes, while leaving the virtuous unscathed. By so doing, it restores ones faith in humanity and the mysteries of life.
Alarmed Fellow:"Don't sit in that chair, P.Moore just got up from there, and she has the galloping crump!"

Unconcerned Grand Guy:"Don't worry, P.Moore is a smelly poo-bag, but I have my aura of righteousness to protect me!"
by Mcphersonator October 24, 2016
Get the Galloping Crump mug.