Refers to da humorous "waist-grasp and reverse-direction-swing" action dat ya perform wif a hot chick while you're out strolling da beach/countryside wif her, and you realize dat either (1) it's getting late in da day and so ya wanna be sure of getting yer snuggle-bun "back home to her mama" before dark, or (2) one or both of you has chores/appointments dat you shouldn't be late for, or (3) you've already trekked quite a long way, and so you're concerned dat one or both of you might get weary/achy legs if you journeyed any farther and then hadda clomp all da way back again.
Whenever Tiffany and I are out for a walk, I always smilingly employ da playful pirouette pivot --- complete wif a chuckly-musical "B-d-d-d-d-d-d-r-r-r-r-r-r-r-u-h-h-m-m-p-p!" sound as I twirl her halfway around --- to help take da "sting" out of da fact dat we hafta start heading back again... sooooo much more pleasant dan simply saying, "Let's turn around now."