Just heard myself describe the watery discharge that comes out of a mustard bottle when you squeeze it without shaking it first as "mustard piss" and I'm kind of disappointed there is no one else in the kitchen to run this by, as I feel this is a pretty apt phrase.
@dirtyoldtown Thank you for sharing this phrase. I will always cherish this moment I had with it. Now it is time for me to return it to you, so you can share it with someone else, who is not me.
@dirtyoldtown I am adopting this for ketchup now. The ketchup bottle pisses early and often.
@dirtyoldtown I call it pre-mustard (and/or pre-ketchup)