Extreme joy, anger, etc, brought on by a situation that causes one to be "out of one's mind" with that emotion.

"Beside" was formerly (15th through 19th centuries) used in phrases to mean "out of a mental state or condition, as 'beside one's patience, one's gravity, one's wits'" (Oxford Engl. Dict.), and that use survives only in "'beside oneself': out of one's wits, out of one's senses."
I was so beside myself looking at all the women on the beach that I didn't hear my wife yelling for help.
by quietmaniam February 04, 2010

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×