When a woman wears red panties for a night out by herself or with the "girls"and leaves her man at home, she's looking to get laid/have sex with someone else.
"I found nude pics on my boyfriend's IPhone from some nasty bitch, fuck it...I'm going to the club. Where are my red panties?"
by k1centurion December 20, 2015
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A night meant for celebrating a special occasion; hence, your wife will wear her red fancy panties to bed you.

This is a term introduced by UFC Featherweight Champion Conor McGregor, who is a large Pay-Per-View draw and, in turn, a large pay day for whomever fights him (win or lose).
"I can make you rich. I change your bum life. You fight me, it's a celebration. When you sign to fight me, it's a celebration. You ring back home, you ring your wife. 'Baby, we've done it. We're rich, baby. Conor McGregor made us rich. Break out the red panties.'" - Connor McGregor

"I just got a raise! Now we can finally afford that Honeymoon in Paris that you've always wanted. It's a red panty night, baby."
by Tam.Burger January 5, 2016
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This is a term relating to UFC drama queen Conor McGregor, who often behaves like a moody agressive woman on her period during the build up to the fight.
Once the fight is done, it feels like a weight has been lifted from your shoulders. No more unnecessary emotional drama / No more red pantys.
Im just pleased the fight is done and dusted. I really enjoyed my last red panty night. Its such a relief to put all that emotional crap behind me
by Dustinpoirier January 7, 2022
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Its red panty night: basically someone is on their period. ..grab a tampon.

Connor McGRegor said it...thats what travis said any way.
by Plagued4thedamned February 12, 2016
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