comic strip characters Augustus Mutt and Jim Jeffries, in U.S. cartoonist Henry Conway ("Bud") Fisher's strip, which debuted in 1907. Used allusively from 1917 in reference to "a pair of stupid men, affable losers," or to one tall (Mutt) and one short (Jeff).[Mutt and Jeff etymology, Mutt and Jeff origin, 英语词源]