The Big Wedgie Inflatable Water Park is the BEST and most EXTREME summer activity returning during the Perth School Holidays! We are about to give you a great reason to get a Wedgie… The Big Wedgie! It’s the world’s tallest and most extreme standalone inflatable waterslide – we even have the world record to prove it! The Big Wedgie is not for the faint-hearted and is definitely a thrill ride!