The unfortunate phenomenon that occurs when your thoughts move faster than your fingers and you begin to type a word or part of a word before you've finished a previous one.
Intended sentence: Man, I'm so hungry, I could eat a horse.
When you repeat the same letter in a word numerous times even when it's not spelled that way. Unlike actual stuttering this usualy occurs at the end of a word but in many cases there are exceptions. Often used when texting :)
person 1: heyyyyyyyyyyy whatss uppp?
person 2: dude you really have a text stutter person 1: nnnnnnnnoooooooooo :P