What are some "stupid guitar rules" you believe in?

Sassafras

Lestratcaster said:

mbe said:

When your strings sound dead there's no need to buy a new set. Just put the old ones in a pan of water and boil them for 15 minutes.

I actually knew people who did this, but it was a very long time ago. 

I've heard rubbing alcohol is good to clean them, and from somewhere Windex works?!

I use WD40.
Puts the zing back in the string.