Prepare to confront the truly revolting! This tier list plunges into the depths of questionable hygiene and downright gross habits. From sniffing the armpit of a dirty t-shirt to leaving earwax in your headphones, we're ranking the most cringe-worthy actions imaginable. Will you find yourself disagreeing with the placement of not washing your bath towel for a month, or perhaps find solidarity with those who re-wear socks for days? Prepare for a visceral reaction as we sort the mildly unpleasant from the utterly disgusting, including the infamous act of peeing in the pool. Let the gagging commence!