In a slight change from normal service, we're devoting this week's Twitter joke round-up to some of our favourites that have carried the hashtag #tweehee.
It is all for a good cause, after all. The #tweehee hashtag was started by tweeter @NettieWriter - the aim being to collect jokes for a book that will then be sold to raise money for the mental health charity Sane.
You can find out more about the project - and enjoy more #tweehee jokes - in our article here. But for now, sit back, relax and enjoy this special edition of Twitter Jokes Of The Week. Some of the gags are originals, some are old favourites - but all of them are very, very giggleworthy indeed...