An amazing ping pong video making the rounds online has gone viral. Tumba ping pong put out the video that features a man throwing knives at a woman who catches them with paddles. He then throws a knife and and slices a pineapple sitting on her head in half! They top it all off with a ping pong ball to the mouth and a thumbs up. Their Youtube page features them pulling off other stunts like knocking over bowling pins and blowing apart a watermelon..all with a ping pong ball!