Under-the-butt Nut Hut Share definition Flag Tighty Whities, BVD's... etc. "all this running is makin my balls flop around!" awwww that sucks, shoulda got an Under-the-butt nut hut Under-the-butt Nut Hut by Kyle Tat June 21, 2008 0 0 Get merch Get the Under-the-butt Nut Hut mug. Buy Now — $32.95 See more merch