My son who is now 26, still hasn't let me forget when he was younger and he wanted to go on one of those rides at the shopping centres where they would move and play music, i would say that it was broken and that maybe next time he could have a turn? Well a couple of years ago a women had her son and the kid wanted to go one of these rides and i said she should tell it's broken, my son's reply was wait so they weren't broken?
So as long as you can bull#*&% your way out of it, i say go for it just don't tell him you were when his an adult.