The cold chills you get when you’ve come to the realization that you’re five minutes from a toilet, and two minutes from shitting yourself. These chills can range from tingling sensations up your spine, to goose bumps, to a sudden terror of emptying your bowels into your pants.
Dude, just pull over, I’ve got the Bum Chills and I’m not going to make it to *insert establishment here*
Relaxing like a wino; laid out anywhere convenient and usually due to being inebriated. Happily lazy in some form of intoxication. Can be used to describe relaxing without intoxication, but implies general unawareness of the world at large.