"to carry or drag," 1922 (in Joyce's "Ulysses"), from Yiddish shlepen "to drag," from Middle High German sleppen, related to Old High German sleifen "to drag," and slifan "to slide, slip" (cf. Middle English slippen; see slip (v.)). The noun meaning "stupid person, loser" is from 1939, short for schlepper "person of little worth" (1934), from schlep (v.).