To press another button accidentally, while pressing numbers or letters that you meant to, resulting in an incorrect extra number/letter. Such as when typing something, or dialing a phone number.

Fuck Donald trump, AKA the worst president ever.

A specific kind of typo where one stroke presses two keys instead of the intended one.

verb, the act of performing a typo. Often used when referring to password typos. See Fat Finger Disease

Pressing two keys at the same time due to typing too fast or mistaking the distance needed to travel to the intended letter.

The syndrome used to describe a person who consistently makes typing errors when chatting or in emails. Fat Fingers is derived from the image that due to their large fingers, they press many letters when only intending to press one.

trying to press a link on a social networking site and inadvertantly pressing like on something that is not likable or relevant to you