The Mulligan is a red, round enemy from The Binding of Isaac, the 2011 roguelike by Edmund McMillen and Florian Himsl later remade as The Binding of Isaac: Rebirth in 2014. True to the game's gross-out humour, Mulligans are poop-themed monsters that drop attack flies when they appear. Their short, squelchy enemy sounds became fan favourites, ripped from gameplay and shared as meme clips. Today this sound shows up in Isaac compilations, roguelike montages and fail edits, a quick badge of honour for anyone who has survived the game's endless basement runs.