goes into a shop and asks for a packet of Tampax. Asistant asks him if he is sure that is what he wants.
"Yes" says the boy, "they are for my four-year-old brother".
"Really?" she asks, "do you know what Tampax are?"
"I've seen the advert" says the lad. "It says that with these you can swim and ride a bike.......my brother can't do either!!"