A shittercritter "shih ter krih ter" is a person who makes more money turning tricks in the
bathroom than they do at their actual
job, which is implied to be a
stripper.
Yeah, we all call her a
stripper, she says she's
one, and her taxes say it; but she makes more money blowing guys in the bathroom at work than she does as an actual
stripper. The bathroom has worse lighting, which means more money for her. Hence, she's a shittercritter.