Sitting on a chair without looking at it can be one of the riskiest things one can do, especially when they're surrounded by pranksters. The star of this clip learned that lesson in a comical way. <br /><br />"This man was going to sit down, but his chair got moved!" the filmer, Dean, told WooGlobe. <br /><br />As the clueless subject decides to let the chair support him, one of the guys next to him sneakily pulls the chair a few inches back, leading to the subject making contact with the floor instead.<br /><br /><br />WooGlobe Ref : WGA804098<br />For licensing and to use this video, please email licensing@wooglobe.com