None. The light bulb shall never burn out. (OK. It's more cathartic than funny...)
Three brunettes trying to burn it down.
If you burn it you get stoned
When one votes, it changes something, making things worse. When another votes, it doesn't change anything, making things worse.
Hmmm........I'll just do a few numbers and get back to you
Many hands make light work.
5. 1 to screw in the light bulb, and 4 to remark on how grand the old one was.