The shivering you get right before you unload a 10-pound dump into the toilet. This is followed by goosebumps, a flexed butthole, and a strange growling noise in your stomach telling you its time to unload.
Viktor: Dude, are you okay? You're shaking pretty badly.
Tim: Yeah, dude I'm fine I just got the shit shivers.
n. That pleasant little twitch of relief your whole body feels during a good dump. Immediately follows the poop chills. Means you just made a good one. Sometimes associated with a tingly sensation in the knees.