A thumb is severed by table saw with copious amounts of cartoonish, spurting blood (That's why UHF got the PG-13 rating). Fist fights, numerous gunfights, bodies non-graphically exploding after being hit by arrows or bullets, staple gun being fired on a person's face, person comically cleaved in half by a sword with no blood or gore, karate players falling through windows, body flattened by giant rock.
A man backs out of a cave entrance and is comically knocked over by a speeding train
Dogs are "taught how to fly" by being thrown out of a third floor window.