two little boys go into the grocery store. one is nine, one is four. the nine-year-old grabs a box of tampons from the shelf and carries it 2 the register for check-out. the cashier asks "oh, these must be for your mom, huh?" the nine-year-old replies, "nope, not for my mom." without thinking, the cashier responded, "well, they must be for your sister then?" the nine-year-old responded, "nope, not for my sister either." the cashier had now become curious. "oh. not for your mom and not for your sister -- then who r they for?" the nine-year old says "they're for my four-year-old little brother." the cashier is surprised: "your four year-old-brother?" the nine-year-old explains: "well yeah, they say on tv if u wear one of these, u can swim or ride a bike -- and my little brother can't do either of those things."