Reverse-Grip Chicago Style 

The act of male masturbation where your hand is reversed. (Thumb and index finger towards the shaft towards the balls) and stroking slowly in a fluid motion.

kyle did you jerk off today?

Yea but I had to switch it up so I went reverse-grip Chicago style

Reverse-Grip Chicago Style by Buster Miller August 2, 2015

Reverse monkey grip 

masturbating with palm down

"Dude she used a reverse monkey grip on me!"

Reverse monkey grip by R-Mac January 15, 2005

Reversed Traditional grip 

In drumming, instead of the left hand using an underhand grip, the player uses the underhand grip on the right hand and overhand grip on the left hand. Predominantly used by black Drummers

Dude, you're grip is bass ackwards"..."No it aint, shit, I'm using reversed traditional grip"

Reversed Traditional grip by Bilboa September 4, 2010