When you fist somebody with both hands extended like an open pair of scissors
"I scissor fisted Rebecca last night it was so hot"
when you have anal intercourse with a man and his asshole prolapses and his guts begin to fall out of his body but you keep going and do not stop the intercourse
Mark "hey man how was that gay bar last night"
Jeff "it was great until I got a Singaporean gut fucking from this black guy named Octavion"