Q: How many pot growers does it take to screw in a light bulb?
A: None, they use fluorescent bulbs instead.

Note: Fluorescent light is closer to natural sunlight than an incandescent bulb, so anyone using artificial light (which pot growers might do to keep their crops covered and safe from flying, prying eyes) to grow stuff would probably use fluorescent light rather than incandescent.

Q: What if you have *two* dead bulbs?
A: They replace your fuse box.

How many Windows users does it take to change a light bulb?

One, but hell swear up and down that it was just as easy for him as it would have been for a Macintosh user.

Q: How many pawnbrokers does it take to change a lightbulb?
A: None. Its of no interest to them.

Q: How many maths students does it take to change a lightbulb ?
A: 20. One to change it and the rest to watch and discuss how exciting it is.

Q: How many carpenters does it take to screw in a light bulb?
A: Sod you! Thats the electricians job.

Q: How many Republicans does it take to screw in a light bulb?
A: Two–one to do it and one to steady the chandelier.

Q: How many quantum physicists does it take to change a lightbulb ?
A: One. Two to do it, and one to renormalise the wave function.

Q: How many soccer players does it take to screw in a lightbulb ?
A: 15 – One to put the bulb in, 10 to kiss him afterwards, and the other sides back four to all stand around and put their hands up.

Q: How many librarians does it take to screw in a light bulb?
A: I dont know, but I can look it up for you.