h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

I always collapse on my bed in the middle of the night at the end of a long day, only to be forced to walk downstairs and do me teef and cetera, which keeps me awake for hours. Damned movement.

When there are nanomachines all of that could be done while we sleep. Wouldn't it be great to be at that level of laziness?

Well, I did buy myself an electric toothbrush last Christmas (it was my only present! ) and this has changed my life considerably, except of course that I still have to hold the darned thing against my teeth.

ah well . . .

Aah, but the thing about nanomachines is, they have this annoying tendency to go out of control, and in this case, brush the planet and coat it in the mild poison that is mint fluoride.

A world of toothpaste...

That would probably be one of the most disgusting things ever. Can you imagine drowning in the stuff, especially crest origional.

Better that than Listerine mouthwash... man, that would sting...
And it would go all crusty after a few minutes, and if it managed to penetrate beneath the crust, after every volcano eruption a load of white gunk would come up and dribble out and people wouldn't bother cleaning it up and we'd be left with it for ages until I went and washed it off personally after which it'd reappear a day later...
Sorry about that rant.