walking 69

Best definition
walking 69
Advanced sex position, requiring one partner to be very large and strong, and the other very small and light (see portable). One partner lifts the other and holds him/her upside down while the two perform a 69 on each other. Usually seen in porn videos, but not recommended for the average couple.
We wanted to try a walking 69, but unless she loses some weight, it’s going to ruin my back.