Fapadextrious 

The ability to masturbate using alternating hands (not both hands at once think of writing with both hands but your penis)

Bro I just discovered I'm fapadextrious

Fapadextrious by Nothunterself December 18, 2013

Fapidextrous 

The innate ability to masturbate with both hands without favoring one over the other.

i can masturbate with my left or right hand because im Fapidextrous

Fapidextrous by Greenskulls September 5, 2011

fapidextrous 

The ability to masturbate skillfully with both hands. When one hand is tired, the other hand may be used to continue just as effectively. It is also possible to create unique combinations using both hands.

Guy 1 - I was trying to fap last night, but my right hand got tired, so I had to stop.

Guy 2 - I don't have that problem; I'm fapidextrous. I can go as long as I want.

fapidextrous by JerkMcGerk April 27, 2011

Fapidextruous 

Someone who can masturbate with both hands.

I can jerk off with my left and right hands. I'm fapidextruous!

Fapidextruous by Oogles McGee February 25, 2009