The unattractive girl at a strip club that is dancing on stage not getting any money put down for her that comes over and steals the money that has been laid out for much better quality stripper.
Clint: Lets go put some money down for that hot girl
Nick: OK, but we have to keep an eye on that roguebuffalo to make sure she doesn't come steal our money.
The Fiery Buffalo is when you put hot sauce on your condom before sex, most often before anal sex (though that's not a strict rule). It's most often used as a revenge act.
Monica cheated on me with my father, but when I found out I gave her the Fiery Buffalo and we called it even.
A hot shit typically occurring after a hard night of drinking or eating spicy food. The type of shit that burns upon discharge and leaves a greasy residue behind.
Man, I shouldn't of eaten those jalapeños last night. I suffered a nasty buffalo this morning.