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  • Anybody, see the innuendos at the end. :P lol

  • edinburgh is the most miserable city in edinburgh? shit, i live there :o(

  • A PENCIL is all you need to bring a smile to your face and pleasure to your minds! Try it.....

  • He needs to control for the effect of lulz from somebody walking up and telling you to eat a pencil. That would make me happy.

  • Comment removed

  • Anybody else notice the song at :50 is on Little Big Planet?

  • Comment removed

  • The 'Little Big Plannet' song/music is actually My Patch by Jim Noir from his Tower of Love LP.

  • Michael Mosley is really a fantastic and cheery science host who giggles a lot in the BBC documentaries. If I met him with a pencil in mouth, I guess will laugh so hard that swallow it.

  • I think we would all smile & laugh naturally if we were not bled dry by the idiots in control :( ... :)

  • A pencil is good for relieving boredom.

    (1) tap out a a funky rhythm.

    (2) with the help of some paper (or other willing surface) draw and design and sketch.

  • i think looking silly is what is triggering pleasure..

  • 1:50 woa?

  • the thing in this video that made me smile was hearing LittleBigPlanet music in the background :D

  • nae gadges fae the slums of edinburgh then, Irvine Welsh will be so disappointed

  • depends where you put it

  • Need to test this under an MRI.

  • this is fantastic

  • Another reason not to inject botox in your face :P

  • didn't do anything.

  • oh how incredibly interesting goody goody

  • I bet it was the same pencil , through the whole vid ;D

  • Didn't work for me.

  • Comment removed

  • i dare someone to get the guards outside buckingham palace to do this!

  • Let's see if this can cure depression!!!

  • common sense...yet people dont try it!!! this is great <3 i love bbc.

  • @tahitiancookie

    "common sense"

    Not necessarily. When you're happy, you smile, sure – but it's neither obvious nor self-explanatory that it also (kind of) works the other way around. One might ask: why would forced smiling make me feel happier when I'm actually not feeling like smiling? Undoing my belt doesn't make me feel stuffed, either (admittedly not a great example). The physiology behind this effect isn't all too easily explained, although, yes, it does seem superficially reasonable.

  • funny how they only asked english people, I'm sure that wasn't intentional.

  • my pencil tastes funny

  • Gon' try it.

  • cheaper than weed^^

  • Omg it actually worked =D

  • Funny nice to know.

  • LOL, I really need this.

  • Thumbs up when you try it too :D

  • ......

  • hehe... great!

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