We'd now like to take our hats - and very possibly our tops - off for Chris O'Dowd, who stars in a tongue-in-cheek new ad campaign to highlight male breast cancer.

Chris plays Lars Larson - a topless trampolining health and safety officer - in this sketch on behalf of charity Coppafeel. Be prepared to sit through several minutes of silly quotes and tastefully filmed topless women on trampolines before the film's true message comes across.

And if you want more near-the-knuckle giggles, you're in the right place. Take a look at our latest round-up of funny viral videos...

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  • Sunbathing Dog Plays Dead

    Don't worry, he's not actually dead. <a href="http://www.huffingtonpost.co.uk/2012/09/06/sunbathing-dog-plays-dead-lying-in-road_n_1860478.html?utm_hp_ref=uk-viral-videos" target="_hplink">Just dead lazy.</a>

  • Twilight Gets the Bad Lip Reading Treatment

    "Dude, you slapped a fish!" <a href="http://www.huffingtonpost.co.uk/2012/09/05/twilight-robert-pattinson-kristen-stewart-edward-bella-bad-lip-reading_n_1856927.html?utm_hp_ref=uk-viral-videos" target="_hplink">exclaims Bella</a>. Understandably.

  • X Factor Mum Fights Back

    <a href="http://www.huffingtonpost.co.uk/2012/09/04/x-factor-mum-spoof-news-video_n_1853470.html?utm_hp_ref=uk-viral-videos" target="_hplink">Shocking new footage</a> shows her audition didn't go nearly as badly as we thought.

  • How To Deal With A Bad Driver, Brazilian-Style

    If only British pedestrians <a href="http://www.huffingtonpost.co.uk/2012/09/03/muscly-brazilian-men-carry-car-off-zebra-crossing_n_1851409.html?utm_hp_ref=uk-viral-videos" target="_hplink">were this organised</a>.

  • What Nellie The Talking Otter Is REALLY Saying

    Because <a href="http://www.huffingtonpost.co.uk/2012/09/04/nellie-talking-otter-spoof-video_n_1853545.html?utm_hp_ref=uk-viral-videos" target="_hplink">we can't all be Doctor Doolittle</a>...

  • The Anti-Gay Marriage Advert

    Is it real? Is it a spoof? Either way, <a href="http://www.huffingtonpost.co.uk/2012/09/07/new-morning-mitt-romney-campaign-ad-barack-obama-gay-marriage_n_1861202.html?utm_hp_ref=uk-viral-videos" target="_hplink">it's completely hilarious</a>.

  • Hollywood's Most Ridiculous Edited-For-TV Movie Lines

    When swearing <a href="http://www.huffingtonpost.co.uk/2012/09/04/hollywoods-most-ridiculous-edited-for-television-movie-lines_n_1853843.html?utm_hp_ref=uk-viral-videos" target="_hplink">is dubbed for TV</a>... badly.

  • Shop Prankster Renames Products

    And we think some of <a href="http://www.huffingtonpost.co.uk/2012/09/03/target-shop-prankster-finds-better-names-for-things_n_1851474.html?utm_hp_ref=uk-viral-videos" target="_hplink">his suggestions</a> are highly sensible.

  • Mad Men Do Rick Astley

    They're <a href="http://www.huffingtonpost.co.uk/2012/09/05/mad-men-jon-hamm-christina-hendricks-rick-astley-never-gonna-give-you-up_n_1856858.html?utm_hp_ref=uk-viral-videos" target="_hplink">never gonna give you up</a>. Never gonna let you down...

  • Mitt Romney Quits!

    Cassetteboy <a href="http://www.huffingtonpost.co.uk/2012/09/03/cassetteboy-republican-candidate-mitt-romney-quits-american-presidential-race_n_1851280.html?utm_hp_ref=uk-viral-videos" target="_hplink">strikes again</a>.