Type Tic

Like a facial tic, a type tic is an idiosyncratic word or way of spelling that people use when typing.
It could be adding "lol," spelling the as teh, accidentally using 1 instead of !, or just always using a certain sentence structure (usually incorrectly.)
Some people have very distinctive typing tics, such as Tara Gilesbie.

"fangz!1 oh yah nd prepz stop flaming sa story!11 raven fangz 4 da help c ya gurl afta vocation!11" is filled with Tara's idiosyncratic Type Tic.