Dentist prank advice

I have a dentist appointment coming up. It's on April 1st, which in the US is sometimes known as April Fool's Day. Last year when I made the appointment, I was joking with them that I was going to have to play some kind of a prank since it's going to be April 1st. So I feel like I need to follow through on that, but I'm coming up short on ideas. I did some looking online, but most of the pranks are the dentist playing pranks on the patients, not the other way around. There is this one, but I'm not sure that I can pull that off. I thought I'd see if any of you Tilderitos have any ideas.