Butt Frosty Share definition Flag Dropping a shit in the snow and letting it freeze, while experiencing diarrhea symptoms. Last winter I was walking home, and I got hit with a major case of diarrhea, so I walked into the bushes and made a Butt Frosty. Butt Frosty by Archerman23 March 25, 2009 0 0 Get merch Get the Butt Frosty mug. Buy Now — $32.95 See more merch