COMIC RELIEF

Comic relief consist to put a humorous character, scene or witty dialogue in a moment with a lot of tension and often use it for lower the tension that there is in the viewer.
I laugh in a horror film where there was a comic relief scene more than one time. For example when Johnny Depp in Sleepy Hollow cut the tree which connected the real world with the hell and the blood splatters in his face and he does funny faces and does singular and amusing gestures.