hot runny butt piss - may be caused by consuming large amounts of alcohol, bad food, or being really sick. May also be caused by nervousness, anxiety, or people that you hate so badly it makes you want to poop your pants. Please don't confuse with "THE RUNS" because it's much worse!
Josh: "Hey man, what's wrong with you?"
Paul: "I've got a case of HRBP."
Josh: "HRBP? what the f is that?"
Paul: "Hot Runny Butt Piss. My ass is on fire from all that fucking Quizno's we ate yesterday!"