The clear milky discharge that is often released prematurely from the tip of a mustard bottle when squeezed too hard or too quickly.
by PGM1 March 9, 2010
Get the pre-mustardmug. The clear liquid that dribbles out before the mustard when you squeeze the bottle. This usually happens when the mustard sits for a long period of time.
by Jeff the bear March 10, 2010
Get the mustard pre-cummug.