Is it okay to eat expired mustard?!
Answers:
You will probably get some stomach ache, diarrhea, or minor food poisoning. Other than that, you will be fine.
Experience...
Well, you shouldn't eat mustard that's been in your fridge for more than 8 months. There is a fat soluble alcohol in mustard that keeps it good for longer, but after 8 months, it's no good, even if it tastes good. Depending on how much mustard you ate, you might get a stomachache or a few other symptoms until your body naturally removes it from your system.
Oh, god, you're gonna DIE!!!
You really should get out more.
lol I think you'll be fine