A sudden surge in typing speed, usually due to a time pressure or a spontaneous good idea. The typer finds himself typing almost twice as quickly as he usually does. Most words typed end up misspelled.
John wanted to end his sentence on Facebook Chat before Katie could interfere, so he had a temporary keyboard adrenaline rush.
As Peter was just about to cum, he had a keyboard adrenaline rush that found him some more desirable porn to blow his load on.
Hypnotoad was having a keyb-ALL HAIL HYPNOTOAD