Mythical Part man, part-crab...possibly a man with crabs...scratches alot in private areas, obsessed with Chachi, acting like it's cracked-out, and makes a noise "geeee."
See also: James Smith (legend of the Man-Crab)
Man Crab: "Hey Sexy Dave...GEeeeeee." "I'm the best Wal-Mart unloader there ever was, boi!"
Dave: AHHHHHH! Man-Crab! Call Batman!