Sack Biscuit 

When one defecates while standing on their head, and lets the fecal material slide across their scrotum to fall. The resultant fecal 'snail trail' is dried with a hair dryer and peeled away, resulting in a dried feces chip.

"I was so constipated I almost passed out making my sack biscuit."

Sack Biscuit by Uncle_Scary May 6, 2010

Sack Biscuit 

A biscuit (Americans would call them cookies) that has been finely rubbed by the scrotum of a bull. Specifically not a human scrotum, as this is unethical.

Person 1: yo what kind of biscuit is that bruv

Person 2: Sack Biscuit. Have a try mate.

Sack Biscuit by Monkey Whisperer November 1, 2020

sickbiscuit 

word derived from faes and dixon meaning,fucking sweet x 100000000000000000

the no pants dance is sickbiscuit

sickbiscuit by boom shaka laka February 11, 2007