When you commit a typo while writing. In this case your friends will automatically have the right to bully you to death.
Pedro: Hey dude I ate a big-ass tomtatoe yesterday.
Sam: YOU HAD A KEYBOARD STROKE FAM.
Pedro: *cries himself to sleep*
When you smash your face on the keyboard.
"Nwtjwyjwjrehrj"
"I think he had a Keyboard stroke!"