April Fools!

So last night my patient canceled last minute and a girl in my class gave me a number to call to get a new patient. I call this guy and he says he'll come but he hopes I am ready for a challenge because he has lingual braces. This means that he has normal braces but they are on the tongue side or his teeth instead of the cheek side. All night I was completely stressed because I have never had a patient with normal braces and this guy has them on the inside. So this morning I walk him back to my operatory and sit him down. As he is talking to me I see brownish/black stuff on his teeth and then he randomly says"I don't brush very often." I'm thinking Oh no, this is going to be so hard. We require every patient to rinse with Listerine before we start working in their mouths to reduce the amount of bacteria in their mouths. So I had him rinse and when he spit it out it was full brown chunks. He proceeds to tell me that he and his friend thought it would be funny to use "teeth rot" paint on his teeth to play an April fool's joke on me. It would have been funnier if he had let me actually start looking in his mouth first but overall a pretty good April fool's day joke! This is an actual picture he email me of his mouth before he came in.