One of the innerward folds that make up the sphincter.
Depending on your diet and BM Habits, you may piss off one of these little guys and they will retaliate by becoming Inflamed Hemorrhoids.
At this stage they are susceptible to pop, with little warning. Like a land mine these bad boys can go off at the drop of a dime or a loud fart, leading to severe bleeding and anal leakage. also, if not washed properly they are the main culprit of the common conditions known as
and "Stink Finger".
Terry- " Tim! I took a shit and there was blood on the toilette paper!"
Tim- "You probably ruptured a Quiver! Thats going to take weeks to heal. "