GROCERY STORE Two little boys go into the grocery store. One is nine, the other is four. The nine year old grabs a box of tampons from the shelf and carries it to the register for checkout. The cashier asks, "Oh, these must be for your mom, huh?" The nine-year-old replies, "Nope, not for my mom." The cashier responds, "Well, they must be for your sister then?" The nine year old says, "Nope, not for my sister either." By this time, the cashier was curious. "Oh. Well, if they're not for your mom and they're not for your sister, who are they for?" The nine year old says, "They're for my four-year-old little brother." The cashier is surprised. "Your four-year-old little brother?" So the nine year old explains, "Well yeah, they say on TV if you wear one of these you can swim or ride a bike and my little brother can't do either of them!"