flip and grip
The act of flipping your smart watch where it's on the underside of your wrist so that you can simultaneously watch porn and masturbate
Just remember to put your watch back in the normal position lest someone suspects you of conducting a flip and grip session in the office closet.
Flip the grip
While riding a motorcycle, turning the throttle all the way open, hence flipping the (throttle) grip.
I was casually riding down the highway when some cager tried to pass me. So I did flip the grip and popped a huge wheelie.