Good Logic

Two young boys walked into a pharmacy one day, picked out
a box of tampons and proceeded to the checkout counter.
The man at the counter asked the older boy, 'Son, how
old are you?'
'Eight,' the boy replied..The man continued,
'Do you know what these are used for?'
The boy replied, 'Not exactly, but they aren't for
me. They're for him. He's my brother. He's
four. We saw on TV that if you use these you would be able
to swim and ride a bike. Right now, he can't do
either one.