02/09/2013 10:47 BST | Updated 02/09/2013 11:41 BST

Twitter's Favourite Light Bulb Jokes

lightbulb tweet joke preview

Knock knock! Who's there? A light bulb joke! A light bulb joke who? Sorry, erm, we didn't really think this one through...

Yes, they're the oldest jokes in the book. Apart from 'knock knock' ones. So we asked our @HuffPostUKCom Twitter followers to tell us their favourites - old, new, overheard or created themselves.

Here are our pick of the bunch. Feel free to add yours in the comments below!

Photo gallery Twitter's Light Bulb Jokes See Gallery