Whenever you beat your meat so much that you have a really strong grip.
Ayo this kid tried to grab my phone but i had really strong Gamer Grip from beating my meat alot.
The pain or tense muscle feeling in your hand after an intense/long gaming session. It can vary from thumb cramping to stiff wrists.
I got gamer grip in my wrist after playing league 4 hours straight, I couldn't move my hand for an hour afterwords .