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Having sex; Fucking; the act of engaging in sexual intercourse.
I walked in on my homeboy crashin' my girlfriend, I was so pissed I kicked his ass and dumped her.
by TeeBee July 04, 2007
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making fun of people but you're joking hoping the other dosent get mad
"today at the lunch table everyone was crashin" or "I hope you're not crashin" or "stop crashin"
by destinyghf October 07, 2016
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