Sampy is a pooper known for making numerous Back to the Future poops. He is one of the four horsemen of the back to the wtf cult.
First Poop Made
The earliest upload that can be found on GW's channel is "back to the mong 4" uploaded in April 2007.
Pooped his ass off for a good two or three years, slowed down quite a bit after that, then stopped altogether.