turd curler

An acquaintance of a friend (generally, but not always, from Australia) that parties with you and your friend and ends up crashing at your place. Whilst everyone is asleep he takes a bowl from your kitchen and perfectly curls a turd in it and leaves - never to be seen again.

“Dude, that guy from Australia is a turd curler. He curled one in my cereal bowl last night and left it on the kitchen counter.”