When you have a bowel movement that replicates the shape of a shark. ie. pinching it off to make a pointy end like a shark face swimming in your toilet bowl.
by Smyleegirl13 July 16, 2017
Defecating, dropping a big turd, dropping the kids off at the pool. So named for the tail left above the water, after you've sculpted your brown water-dwelling silent killer.
by Josh S. S. April 11, 2007