A twister biscuit is a large chunk of feces ejected by a human being who is being propelled through the air by a tornado or other extreme-wind weather event. Usually it is the result of a person, having been engaged in the act of coitus or elimination, being thrown violently without warning into the air while pantless.
"Man, I tell you what, skeeter. Ain't nothin' gonna clear your guts for you like shitting out a twister biscuit from a hundred-odd feet up in the air. I musta' lost five pounds before I hit the ground."
by Franklin In San Diego February 14, 2017