A Man with waving hand

Today I bought a new Canon lens, 50/1.2. I have heard it is a great piece of glas but somekind of focus shift is very annoying. Ok, I thought that this is a perfect lens for me because I'm not good with strobos. That's why I took a chance and I bought it.

The seller was nice because he allowed me to test the one he is selling. Although the testing inside the shop convinced me I had to continue testing outside the shop. So, I was shooting walls etc, and then this man appeared in front of me and waved his hand and started posing. I took three photos. We didn't talk to each other. And then he was gone.