free farter

One who lets farts fly without any attempt to conceal them.

Grandma has no shame about dropping loud farts, even when she has visitors over. She's a free farter.

Shark fin poop

Noun: An act of defecation in which an increased amount of feces causes a portion of the pile to exceed the water level in the toilet bowl, resulting in an unusually strong smell.

“I just dropped a shark fin poop – don’t go in there for about 35-45 minutes!”