Usually a person with any combination of immaturity, mental disorders, social disorders, ability to make other laugh, and random sexual inuendo expulsion. Should be approached with caution, as a wojtus may attempt to grasp tightly anything, whether living or inanimate, and hold it in a way it calls a hug. Wojtusai (pl) also bite. Either may be fatal. If you should come into contact with a wojtus, direct its attention at something shiny, and contact your local insane assylum.
That wojtus is just like a second-grader with suicidal tendencies!