yes i know this is stupid

my dad is 55 years old and he thinks WWE is ALL real, whenever i'm wth my friends at home he turns on to raw or smackdown or etc w/e u call it, and hes like "I'm putting $50 that Triple H/John cena etc will win this game!!! come on cena! get up! he needs to get his confidence back/randy orton had a good game so far, the crowd needs to get behind him" etc. my friends look at him in an amused and an (very) embarrassed way.

don't tell me that its not fake, i know the moves and blood are real but its all acting and scripted 95% of WWE fans know it, the winner is decided before the game starts.

how do i tell this to my dad? he is stubborn and he won't believe a thing havin watched wwe for over 5 years