A soiling of the underpants resulting from a wet dream or accident during a lap dance. Common amongst teenage boys.
by Schillbj April 20, 2009
cum or vaginal discharge on your underpants due to general horniness and presense of an active teenage vagina.
"Hmmm, should I wear Olivia's Bratz underpants or my cumderpants?"
"Your cumderpants. You don't want uneven flap disease."
"Your cumderpants. You don't want uneven flap disease."
by i love bj March 25, 2010
by grannymartha August 07, 2020