Everyone feels a different level of joy while slipping down a slide, typically ranging from blah to bliss, but some people outrightly hate slides, possibly because they got stuck in one when they were kids.
Judging by the reporter's reaction as she slides down in this video she has either never been on a slide in her life and is totally terrified or she's having the time of her life and expresses joy by screaming bloody murder.
Maybe she sees something at the bottom of the slide we can't see?
-Via Know Your Meme