Where's the Teeth?

I share an online calendar with a friend of mine. He works three jobs, and I try to stay social with my peeps, so it's just easiest to do a quick schedule check when we want to make plans like buying tickets to a show.

Last week I was sitting in the waiting area of my dentist's office when I got a text message. Here's what it said:

"You'll love this: I went in to my dentist appointment today at 2pm, only to discover that the appointment on my calendar was YOUR dentist appointment."

We were in separate offices across the city, but due to a misreading of a poorly color-coded time slot, only one of us was actually supposed to be there. 

He got hearty chuckles from the receptionist. I got my teeth cleaned.