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To act mischieviously or naughtily.
oh gina! you're so rauncus! ;)
by Rauncus me May 15, 2011
1- To be mischevious and/or rather naughty.
2- An outlandish event.
Person one: So i was sexting my boyfriend yesterday..
Person two: Oh that's so rauncus!
by Rauncosity June 07, 2011