The balloon gets to go under my arse - you don't

I can make you feel a lot of things. Today I'm going to make you feel jealous... of a balloon. I inflate the balloon, bigger and bigger, and bigger. It's such a huge balloon. Once it's fully inflated - it goes down on the floor... it gets to go right below my arse. Right where I know you want to be. I sit and wiggle my beautiful big bum all over it... until, boom, it pops under my greatness.