When the rear waistband of a person's underwear is pulled completely over that person's head in such a manner as to cause death by ligature strangulation. Named after Denver Lee St. Clair, whose death was partially attributed to such a wedgie. cf. 'atomic wedgie', a similar non-lethal wedgie variant.
Hand over your wallet before I give you a wedgie St. Clair.
by cwm January 10, 2014