From Wiktionary, the free dictionary
From tschumple (“waddle, wander sluggishly”) + -el, itself of unknown origin, possibly related to tschalpe, a synonym.
Tschumpel m
- (vulgar) an asinine person, especially one that is easily exploited
- (informal, by extension) a person in a position where they have to submit to exploitation, e.g. an intern
