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28.
A condiment that everybody who is young, like under 18 years old hates,except for a few people who can't stand cream based, sauces,though fewer and fewer people who are young and healthy eat this yellow paste because, supposedly it burns there palate, and it stings there nostrils, the way mustard gas burns up people.
It is projected by the Condiment survey, that by the year 2010, fewer than 2.5 percent of the population will eat mustard,

12 year old in 2010: Ewwwww!!! Does this have mustard on it?!?! I hate mustard!! Where is a knife so I can get this off my burger?

Parent in 2010:(thinking to self) Man, when I was a kid, mustard was still large in picnics. What is up with so many people hating it now?
by Phaenixdrools March 21, 2007
 
1.
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
 
2.
Good, Pleasing to oneself, exciting
That's fair mustard innit bruv.
by Jimbo Jet Set October 23, 2003
 
3.
Another slang word for money, similar to 'cheese'.
"...Friends want to leave when they see you outta mustard..."
-Lil Wayne
by JoSé February 18, 2005
 
4.
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
 
5.
Slang for money
You get busted, I neva leave home without mustard
- Method Man (He's from Queens/Long Island so this rhymes)
by johnnyblaze March 08, 2008
 
6.
Bold in the sense of bad. Edgy and difficult, bad. Used in Northern Ireland
That wee boy is just mustard.
by AidanG August 28, 2005
 
7.
A tangy sauce often put on hotdogs and hamburgers. Called mustard because it is in fact the same color as mustard
Hand me the bottle of mustard please
by Habeus February 17, 2005