fister blister
when you fist a girl so hard she gets a blister on her vagina which you call a fister blister
Sarah was being a bitch so I gave her the fister blister
blister fister
Taking a lit cigarette and burning the rim of the anus. As the blisters appear you pop them with a forward motion of the fist using the pus as lubricant for easy insertion.
My butt is so sore after a blister fister