Top definition
Get angry; display irritation.

(Possibly from the sometimes violent way a spark (aka electrical arc) can jump between two electrodes.)

Comparable with 'raise your hackles.'
I hope you don't arc up, but I just drank your last beer.
by Heffster July 01, 2008
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Apr 26 Word of the Day
1. The default beliefs installed when you were a child.

2. An unexamined position you absorbed from your environment growing up.
I grew up in a conservative home so my factory settings lead me to vote Republican.
I grew up in a liberal home so my factory settings lead me to vote Democrat.
by riemannslost0 February 04, 2020
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