Fantasy
How many fairies does it take to change a lightbulb?
Depends on how many working ones they want to run off with.
How many gremlins does it take to change a lightbulb?
One. But its entire extended family will invite themselves over to practise their electronics juggling afterwards.
How many unicorns does it take to change a lightbulb?
Oh, ha ha. You’re hilarious. Let’s make fun of the only intelligent species without opposable thumbs.
How many dragons does it take to change a lightbulb?
Why would you want a new lightbulb when you have a dragon?
How many vampires does it take to change a lightbulb?
Twilight makes so much more sense right now.
Surreal
How many lightbulbs does it take to change a person?
Legumes.
Comics
How many Golden Age superheroes does it take to change a lightbulb?
One.
How many Silver Age superheroes does it take to change a lightbulb?
One, although he has his doubts.
How many Bronze Age superheroes does it take to change a lightbulb?
One. It reminded him of Gwen Stacy.
How many Modern Age superheroes does it take to change a lightbulb?
You misspelled “antiheroes”.
Western
How many anachronisms does it take to change a lightbulb?
Science Fiction
How many robots does it take to change a lightbulb?
How many humans does it take to perform open-heart surgery?
How many mutants does it take to change a lightbulb?
None. They’re all too busy saving the world.
How many aliens does it take to change a lightbulb?
On my planet, we call it a zxkzn’yxchy’zx.
One.
How many telepaths does it take to change a lightbulb?
Magical Realism
How many people does it take to change a lightbulb?
None. The lightbulb changes itself. We never learn how, and it is all very profound.
Social Media
How many Tumblr users does it take to change a lightbulb?
Four. One to replace the lightbulb, another to photograph the event, and a third to argue strongly against the oppression of lightbulb-kind, thus sparking off a furious argument with the original poster. The fourth will add a curiously appropriate Supernatural gif.
How many Tumblr users does it take to change a lightbulb?
Three. One to take a selfie of themselves replacing the lightbulb, and another to go on a rant about the patriarchy. The third will add a curiously appropriate Supernatural gif.
How many Tumblr users does it take to change a lightbulb?
Three. One to replace the lightbulb badly and then make a witty text post about it, and another to add a curiously appropriate Supernatural gif. The third to complain about the Supernatural fandom taking over all the good posts.
How many Tumblr users does it take to change a lightbulb?
Two. One to both replace the lightbulb and then post about it. Another to add a curiously appropriate Supernatural gif.
How many Tumblr users does it take to change a lightbulb?
One. Their post about it will include a curiously appropriate Supernatural gif.
How many Tumblr users does it take to change a lightbulb?
Western
How many anachronisms does it take to change a lightbulb?
Non-Fiction
How many writers does it take to change a lightbulb?
We don’t change lightbulbs. Our computer screens are sufficient.
How many scientists does it take to change a lightbulb?
Six. One to present their proposal to the other five, who are on the board of ethics, and who reject it. The lightbulb is later changed by the janitor.
How many university students does it take to change a lightbulb?
Will this be on the final?
Literary
How many protagonists does it take to change a lightbulb?
One. But only after 200 pages of no discernible plot.
And a Bonus Joke Not Involving Lightbulbs
How do you identify a writer using only their internet browsing history?
You don’t. We have all learned to delete our browsing history on a daily basis after numerous friendly misunderstandings with our national law enforcement officials.