Mobius Double Reacharound 

When two males stand facing away from each other while using their right hand to jack each other off and their left hand to finger each other's assholes.

I walked in on Dave and Hank during their Mobius Double Reacharound last night, it was a sight that I will never forget.

Mobius Double Reacharound by Garfibromyalgia December 24, 2022

Mobius Double Reach Around 

A reach-around using both hands where the fingers are crossed so the index and middle and crossed, as are the pinky and ring

I met this dorky gal and she showed me the mobius double reach around

Mobius Double Reach Around by Cryptopox137 March 14, 2023