Three. One to post it, and two to repost it.
As much people as is needed to screw that lightbulb.
An elevator has a GF
Reposts are allowed.
Three. One to post it, the second to post a better punchline in the comments, and the third to complain that it's a repost.
Christopher Walken. (Not sure if it's a repost, but I don't think I've seen it posted here.)
In the Snowbank. My first post is a dad joke
He was sent to the udder side
Let Meowt!!!!
Nothing
Because n always has to be the center of attention.