Definitions by demi-dono

Sasaki Kojiro

Fisting two girls at once (preferably identical twins) and wielding them like swords.

The "Sasaki Kojiro" technique is also known as the "Niten Ganryuu (二天岩流)" in Japanese.

Choking a girl while shoving your whole hand in her pussy like a glove.

The culprit walked up on a prostitute in an alleyway and gave her the Jack the Ripper.