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British slang of unknown origin meaning "crazy", like "off your rocker" or "out of your mind".
"I can't believe she tried to do that with only duct tape, a banana, and a bottle of Windex... that bitch was off her chump!"

"That may be true, but you're off your chump if you think you can get off without putting 'off your chump' in the example usage here."
by offmychump December 15, 2008
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Jul 28 Word of the Day
to sport a boner, fly the sail at full mass, rock hard, etc.
"I had a lot of cartoon characters that used to get me sexually aroused as a kid... The female reindeer from the Rudolph claymation series, when I was in preschool, I used to be bricked up watching that shit." -Jack Harlow
by real_philly February 11, 2020
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