Here's one! Feel free to add more!

How many Gardnerians does it take to change a lightbulb?
- 13, consisting entirely of man-woman working couples.
How many Rad Fems does it take?
- 7. One to do it, two to organize the creche, and four to debate the meaning of the word "unscrew."
How many Crowleyites does it take?
- They can't; Uncle Aleister didn't leave any intstuctions.
How many chaos magicians does it take?
- They don't need to; they're used to working in the dark.
How many Satanists does it take?
-They can't; they are unable to get bulbs with left-hand threads.
How many Fundamentalists does it take?
-They won't, because their original bulb was the only right one.