Unknown to many, a watermelon rind (the thick and firm outer covering) can be eaten. It can be pickled, stir-fried and even candied. It is also particularly high in the amino acid citrulline, which may give men Viagra-like results south of their equator. If you ever want to spice up a party, make hard watermelon by cutting a few holes through the rind and infusing the watermelon with tequila or vodka.

Just make sure to cut those holes with a knife and not your fingers because watermelon rinds are hard. They are meant to be cut open with knives, not fingers. Any attempt to break open the rind with a finger strike could result in an embarrassing trip to the emergency room. But that known physical law does not seem to apply to a certain kung-fu master.

Sifu Michael Parrella of Master Parrella’s Kung-Fu Centers shows us the results of some serious, grip, forearm and finger training in the Chinese martial art as he tears through a watermelon rind using only two fingers from about two feet away.

According to Wikipedia, kung-fu is: Chinese term referring to any study, learning, or practice that requires patience, energy, and time to complete. In its original meaning, kung fu can refer to any discipline or skill achieved through hard work and practice, not necessarily martial arts. The Chinese literal equivalent of “Chinese martial art” would be 中国武术 zhōngguó wǔshù.

Parrella states that he is not sure if a rind is as strong as a human head but that it is certainly stronger than your neck or your face or some soft tissues in your body. You can fast forward to the 2:26 mark of the video to see the start of the challenge. Suffice it to say that this is a video that could give recently eye-poked UFC fighter Matt Mitrione nightmares.