A tyboo is another version of a weaboo, but for an Irish boy obsessed Hunter. This is an inside joke but I'm just putting this online to annoy hunter. Senpai will notice you some day mate.
Someone who repeatedly makes typos, such as in an instant messenger or chat room, and then corrects themselves. Particularly when the correction they give is wrong and for a simple word.
Not to be used on someone who "rites liek dis" (Txt tlk) because that is not a typo for them, they were intentionally being retarded.