hypotenuse leg Share definition Flag Lifted from mathematics, a cruel(yet humerous)term for someone who walks with a cane and has legs as screwy as a willow tree. Clear the sidewalk, here comes a hypotenuse leg! hypotenuse leg by mecaro October 17, 2005 0 0 Get merch Get the hypotenuse leg mug. Buy Now — $32.95 See more merch