So this guy is walking down the street, sees a perfectly good tennis ball on the curb, so he picks it up and puts it in his pocket. A few blocks later, he runs into a woman he knows and they stop to chat. He notices she keeps starting at the tennis ball in his pocket and he self-consciously says "oh, it's just I've got a tennis ball." She says "that must really hurt. I had tennis elbow once and it was really painful."

I love tennis balls pic.twitter.com/DpC43wFhTn

— Life on Earth (@planetepics) February 13, 2016