mashing keyboards

The act of participating in "cyber-sex", that is the depiction of sexual content through the medium of a typed conversation on an internet chat room or online role-playing game. A very common occurrence in MUDs or anonymous chat sites, roleplaying as a person other than oneself is expected though not strictly mandatory. Masturbation involving one or both parties during the event is not unexpected.

While performed inside of online roleplaying games, it is not uncommon for the player characters to form a relationship within which the characters routinely cyber-sex each other as if they were in a "real life" relationship.

Many times in these relationships the players behind the characters will form emotional romantic bonds, possibly culminating in a romantic relationship outside of their cyber-sex medium. Just as often however are people fully capable of forming zero emotional connection with their online partners, even despite the heavy romance between their characters.

The greatest possible expression of frustration short of bestial snarling.

Also the only word in the English language that can legitimately include numbers and be spelt any way you please.

Keyboard Mashing is, essentially the result of someone mashing their keyboard in certain circumstances. Such as in times of frustration, anger, boredom, an attempt to relieve stress or due to a violent spasm in the typist's hands and arms. This generally occurs in chatrooms or on chat programs, such as MSN, IRC, AIM etc.

The most sophisticated way of expressing a mind fuck on instant messaging. Expressed after viewing something that just makes you go "heiucrwy89lq39rlqtvy8huidhjszfaiuehwu9lhjktvu4 hq3atw8bhvj,2qioy78" or similar. Mostly expressed after viewing such things as 2girls1cup or goatse.

when someone finds something funny and replies with random keyboard mashing rather than saying lmao or lol to show they're amused
mostly gays, preteens, or tumblr users use this tactic (or sometimes all three)

Keyboard mashed
Very useful to confusing friends into thinking you've had a stroke.