Eating soup with your mouth open, the sight of it along with vegetables, pouring out your mouth while you're trying to have a conversation at the dinner table.
Pete: *puts soup in mouth* I think that this soup is great *soup pours out mouth*
Steve: That's the most grotesque thing I've ever seen
Something that makes you think of the "goatse man" - an item or image of a hole with hands at either side, being stretched wide open. Coined by "Canis" at Ars Technica