1. a large amount of seaman in the pupic hair after a very intense jerk-off session.
ah shit look at all the twatmustard "HEY REGINA! CAN U LICK OFF ALL MY TWATMUSTARD"
by sds July 31, 2005
1 more definition
Mustard Harvested from a womens twat.
Helmans Twat Mustard, Grey PooTwat, Heinz Twat Mustard
by Doug Leiser April 17, 2007