Abseiling

[Rihanna]

The male act of masturbating your pork sword whilst [slyly] fingering your own bum hole. Its has an uncanny resemblance to the [mountaineering] activity of [abseiling].

[Dave Paprocki]

The sport or activity of descending a rock face or other near-vertical surface by using a doubled rope coiled round the body and fixed at a higher point.

[Jason Yan]

Abseiling in Mountaineering. A way of making a descent down a mountain by sliding down a rope that is fixed to a natural or artificial protrusion.

[Justin Bieber]

the act of [self abuse] whilst simultaneously inserting a dildo in your arse thus [recreating] the motion of a [climber] descending a cliff

[Donald Trump]

Male masturbation [technique] involving [the spare] hand working a dildo or houshold item into the anus; [mirroring] the movements of abseiling.