-Someone that talks massive amounts of shit but will never back it up.
-Someone who runs his mouth non stop.'
- One who acts like the big bad wolf but in reality is a quivering mouse
-Generally a tool that doesnt know he is a tool.
Other synonyms that go with Emer: wanker, douche,dick bag, nut less, gutless, shit talker, tool bag.
Person2: Ouch. Dude, you just met a total Emer.