On Board Computers

I witnessed on my plasma screen
A brand new toothbrush ad!
An ordinary brush except for
What this toothbrush had:
An actual computer in
The handle! “Oh what fun!”
To tell the owner of the brush
Just when the teeth were done!
“On-board computer,” said the voice!
A phrase I’ve grown to hate,
But, still, my hungry rabbit-brain
Snapped quickly at the bait.
On-board computers in your comb?
To keep your fur arranged?
On-board computers in your socks?
To keep your feet estranged?
On-board computers in your belt?
To keep away the fat?
And how about in condoms? No!
I’ll keep away from that!