v (transitive|informal) To lacerate; to wound by multiple lacerations; to injure or damage by cutting, or as if by cutting.
v (intransitive|idiomatic) To behave like a clown or jokester (a cut-up); to misbehave; to act in a playful, comical, boisterous, or unruly manner to elicit laughter, attention, etc.
v (transitive|idiomatic|British) To aggressively move in front of another vehicle while driving. US: cut off.