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
Get the Red Panty Night mug.
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
Get the Red panty night mug.
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
Get the red panty night mug.