A Northern Michigan Bear Rug typically takes place on a "Guys only" fishing, hunting, or camping trip in Northern Michigan; it may occur in front of a fireplace in a cabin or Al-fresco next to a bonfire in the great outdoors. It consists of no less than 5 men (see Bears) who've not showered in multiple days all participating in a sweaty, steamy, sexy, and odiferous orgy while piled high upon each other to conserve warmth and avoid fluid losses.
-Hey bro, are you going camping with all the guys next week?
-Oh for sure fam, I wouldn't miss a chance to enjoy another Northern Michigan Bear Rug, the last one was amazing bro!