Originally Posted By: olly

Which brings to mind Snarmy

Interesting. To save y'all the trouble, here is the Urban Dictionary entry on snarmy:

Originally Posted By: UrbDic
1. EShuff

one who points out things publicly as to point out their authority on non-issues.
So when you said "I think that term 'facon' has been around for a while. A vegetarian said it to me about 2 years ago." you were totally being an EShuff.