Luxurious form of male masturbation.
Step 1: Take off/drop pants or unzip.
Step 2: While standing, raise your leg onto a bench, chair or small stool.
Step 3: Reach under the raised leg. Taking a firm grip of The Penis.
Step 4: Maintain ringlike grip on The Penis with thumb and forfinger. Fanning out remaining three fingers.
Step 5: Rub it out. Maintain Fan.
Matos: What's up Stef, your looking blue?
Stef: Man, cranking just isn't hitting the spot anymore.
Matos: Dude, just start pumping Back-Hand Fantails, it's like your knob won the lottery.
Hayden: Yo, what you up to tonight Big Mattress?
Matt: Just popping off Back-Hand Fantails.
Hayden: Living large!