Honestly? It looks to me like a paddle-ball set that's lost the string and ball. The tube-y thing would be for catching the ball in. Abusive comment hidden. (Show it anyway.)
Also if I, being a 14-year-old kid, pointed out their mistake they did tend to either ignore or make fun of me. It's really a damn good thing I'm naturally good at making friends, or I would've been up a creek.
In fact, PMS and cramping used to be thought to be completely psychosomatic, because it was difficult to prove them with objective evidence. Nevertheless I have no doubt in my mind that I have indeed experienced them.
In other words, Matt, I don't buy your story.