Window or mirror?

After the first practice on Friday the instructors took the junior group to the McD nearby the sport center. Children loved it of course. I am not personally huge fan of these oversized fast food chains but the Fiesta salad with some chili and tortillas was tasty have to admit.

I had this view while eating my dinner (and especially when my firend sitting in front of me was visiting the toilet) and it seemed like a nice surrealistic window to the other room. It can't be mirror as I'm not in it I guess..