To ejaculate in your pants.
Little Jimmy "creamed his jeans" when the cheerleading squad did their splits.
by Steve July 22, 2003
(variants: pants or silkies may replace jeans, in may be added) to orgasm in your pants due to excessive sexual excitement(the second variant is said of females)
Did looking at her big breasts make you cream your jeans?
by Light Joker May 29, 2006