American — Origin (?-1990's on)
A welt, blister, sore or rash located on the
inner thigh—typically caused by the thighs rubbing together and, therefore, appearing on both legs. Common to men in shorts, those indulging on long walks in hot and/or humid weather, runners and fatties. Also
applicable to welts, bruises or injuries caused by vigorous oral suction on the thighs or
elsewhere on the body.
See also: hicky