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...

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  • Henry James

  • Tim Miller

  • Pete Mullins

  • DG

  • Whirled Peas

  • Milton Jones

  • jimcognito

  • David Schneider

  • Lolly

  • Sanjeev Kohli

  • Barry

  • Dave G

  • Sarah Hilary

  • Nick Harvey

  • QuebecTango

  • Laura Sparling

  • @NickMotown

  • chris.tall.ball

  • GlennyRodge

  • Tom Freethestones

  • The Ephemeral Dog

  • Bibi MacGowan

  • Terry Bergin

  • Moose Allain

  • Polly

  • cluedont

  • Tracy King

  • Chris

  • Nicola Tipping

  • Julie D Irwin

  • Bruce Foreskin

  • Martha

  • Lily

  • T'Other Simon

  • Suman Biswas

  • Laurie

  • Richard

  • Jay Faulkner

  • Elpi Pamiadaki

  • Vivienne Clore

  • Claude Bouchard

  • GlennyRodge

  • Mark Diacono

  • David Quantick

  • Marisa Birns

  • Claire King

  • TheAncient

  • Neil

  • Friz Frizzle