Head shaking

Four men are in a dimly lit room with wood-paneled walls and two wall-mounted lights; two men stand on the left, one in a patterned shirt and the other in a dark shirt and cap, while two men sit on a couch on the right, one in a light green shirt and the other in a dark shirt; the standing man in the patterned shirt repeatedly gestures with his right hand while the man in the cap moves his hands and body in a rhythmic, dance-like motion, and the two seated men react with laughter and shifting postures.