mustard pre-cum

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.

Gross, I just got mustard pre-cum on my sandwich.

by Jeff the bear March 10, 2010

Mustard Precum

That watery shit that comes out before you squirt your mustard

I just shot so much mustard precum. It's gonna ruin my weiner

by Joeyfromtheblock March 11, 2015