A classic douche bag move to inflict pain upon an innocent victim. When your friend reaches up high to get an item off a shelf with both hands, you come up behind and karate chop him with both hands right under the exposed rib cage. The resulting pain will cause him to grab his sides (his arms will now look like chicken wings) and bend over in agony, looking like a chicken bending over to peck the ground as he bobs up and down to catch his breath.
Look, my brother is turning blue. I just gave him a Chicken Bender he won't soon forget.