sight gag(n = noun.communication) visual joke - a joke whose effect is achieved by visual means rather than by speech (as in a movie);
is a kind of gag, jape, jest, joke, laugh

at first sight, battle sight, breech sight, gag, gag law, gag line, gag order, gag reflex, gag rule, in plain sight, in sight, keep in sight, line of sight, lose sight of, not by a blame sight, not by a long sight, open sight, out of sight, panoramic sight, peep sight, second sight, sight, sight bill, sight draft, sight see, telescope sight, telescopic sight