Three things...

I received a piece of spam (at my work e-mail address, boo!) that said:

THREE THINGS NEVER TO DO IN BED.

Oh please, I can list those without even thinking very hard. So you won't need to click on any link if you get this spam.

They are:

Cleaning your aquarium
Setting up your potter's wheel and throwing pots
Taking apart and cleaning your lawnmower engine.

You're welcome.