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 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."
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 are they for?"
The nine-year old say, "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 you wear one of
these, you can swim or ride a bike -- and my little brother can't do either of
those things."
HA! HA! HA!