Bainbridge Moon landing

The Bainbridge Moon Landing or "BML", is where a man or women accidentally touch arseholes. Similar to the standard "moon landing", where only baked bums need to touch, the BML however requires a singular accidental connection of the anus with another person's anus.

Becky and Jim we're trampolining naked, and fell on one another, accidentally connecting only their anuses, thus a Bainbridge Moon Landing or "BML"