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2.
Meaning eccentric, daft, insane, crazy, not quite right in the head. Etc.
Originated from England.
You're bloody barmy. You know that right?
by Maymi Weiner August 28, 2008
 
1.
adj. 1.) extremely silly
2.) One who is extremely silly
1. "It's plain barmy of you to think he is a still a virgin at 22!"

2. "Oh, nevermind Sarah. She's not all bad, she's just barmy."
by Alexandra July 27, 2004
 
3.
Acronym for Be A Role Model Yourself. Coined by young people working to address online discrimination for a EU project called ICUD during November 2013
To end a discriminatory post on a social media thread you would type BARMY
by icudblog November 23, 2013