A female's time of the month...
Friend #1: Hey, did you get some last night?

Friend #2: Naaaaah, Bad Moon Rising. Gotta wait a few days until the moon sets...
by The Original Biggus Dickus August 09, 2011
Top Definition
When something bad in the foreseeable future is about to happen.
Johnny:My parents found out about the broken garage window and now they're pissed.

Jerry: I see a bad moon rising
by the fax February 11, 2009
When you are mooning someone and then do a liquid fart.
Scott: Ariel what happened to your white sweater?
Ariel: Man, Jimbo did a bad moon rising to me before I could stop him yo'.
by SkatManDo December 11, 2010
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