1. To clean or adjust your appearance and make it presentable, no matter what you were just doing.
2. To gather your entourage before a party, or gather people from a lame party to go to a better one.
"Don't rush me, I was just taking a piss and I need to regroup and come back strong."
"This party is lame let's regroup and go to a better one."
To step back and reevaluate your plan of attack after going through a stressful or unpleasant situation. It can also mean to simply take a moment to calm yourself in order to be more effective after the stressful event.
I had a meltdown in the middle of serving a party of 20 Karen's at the restaurant I work at, so I had to regroup. Even worse, they were mostly boomers.
For use when you feel sick but still have things you want/have to do but are about to shit your brains out (usually diarrhea). An alternative to puke and rally
Dude are you okay? Do you need to puke and rally?
Nah I think I need to poop and regroup. I’ll be back to the party in a bit.
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.