A sexual act where many men and women, sometimes on special occasions even children take shits in a public pool and someone eats as much defication as they can
Clifford: hey Patricia want to get your family together so we can play turd shark?!

Patricia: yeah sounds like fun!

Clifford mmm this shit sure is tasty

Patricias mom Sandy: hey come over here little turd shark I sharted a little bit i here turd shark can smell a shart from miles away

Clifford: oh don't worry Sandy I'll suck that log right out of your fine milf ass!
by Oscar the plug September 6, 2017
Get the turd shark mug.
A firm poop that comes out as 1 long peice that touches the bottom of the bowl with one end, while the other end breaks the waters surface, resembling a shark fin.
Hey - check it out, I left a shark turd in stall 2. The fin is at least 1" over the water.
by milpoolSK March 7, 2017
Get the shark turd mug.