North Pole Doggy Style
North Pole Doggy Style is the act of anal sex from the doggy style position. The Vagina (from the man's perspective) is the South Pole while the anus is the North Pole, thus North Pole Doggy Style.
Trying something new he mixed it up and tried North Pole Doggy Style instead of the usual position. That did not go over too well with his partner who expressed surprise and shock at the rear entry.