Underestimating something can be a slippery slope because chances are you haven't seen everything yet. <br /><br />In this uproarious clip, Charley Allnutt films her and her brother's reactions to going down a goosebump-worthy water slide in Tenerife. <br /><br />"My brother thought all the water slides were boring, so I decided to take him down a more interesting one," Charley told WooGlobe.<br /> <br />The subjects buy into the slide's hype moments after they're in motion, but the craziness only levels up once the duo hits the 'monstrous' drop. <br />Location: United Kingdom<br />WooGlobe Ref : WGA147397<br />For licensing and to use this video, please email licensing@wooglobe.com