A sex position often involving the male bending the female backwards until her vertebrae, under the stress of being bent so far back, snaps forward a piece of vertebrae out of the females mouth. After said vertebrae is out, the man will bend it in a biscuit shape and put it over her vagina and then eating her out.
"Dude I'm so fucking full after having Spinal Biscuit for breakfast." - bro 1
"Really??? I thought that was illegal in the state of Washington!" - bro 2
"Really??? I thought that was illegal in the state of Washington!" - bro 2
by That other different other guy April 24, 2020
Get the Spinal Biscuitmug.