As in good, not as food but naming or calling something 'mustard' means this is good.
'Last Night Was Mustard'
'That Game Was Mustard'
by SM66 November 07, 2007
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British slang, originating from Pilsley, Derbyshire: A weak expletive which shares both its definition and conventions of use with the word bastard. Originally, "mustard" was used to refer to a child born out of wedlock, but through a process of semantic broadening, it is now mostly used as a general pejorative term. It can be used both as a noun (see example one) and an adjectival intensifier (see example two). The word bastard is used in precisely the same way. As an antidote to your ignorance, other examples of intensifiers are: fucking, bloody, chuffing, sodding, etc.
Example one: My phone's such a mustard; the autocorrect feature has made a fool of me yet again.

Example two: Arghh, my mustard phone has caused me ridicule!
by Coconut Noggin. February 10, 2012
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Rake Yohn hates mustard so bad, if you even get it near him he'll flip out.
by FuCKYou November 12, 2003
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A "code" word for sexual intercourse, sexual appetite, male ejaculate, female ejaculate, all things good! Sometimes we even use it in context, its just simply mustard.
I could tell all night when I was out at the bar, this sweet girl who was looking me up and down was ready for the mustard.

After working twelve hours today at work, the only thing I could think about was the mustard and 8 hours of sleep.

Can't have these brots without the mustard!

Oh, She can get the mustard!

"Did you have a good day?" Oh yeah I got that mustard!

In context when people start catching on we use variations of the word like mustaahhhhh.
by Griff McGriffton April 29, 2010
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