It's Friday, Let's Have Some Fun! That 1 clothing item!
A "tell" is poker talk. It's a gesture or mannerism that one is unaware of, but tips off the others in the game. For example (and I'm not a poker-player), if, whenever I'm dealt three of a kind, I shrug my right shoulder very slightly. I don't know I'm doing it, but the others have observed often enough to know that I have three of a kind in my hand......I was referring to your tilting your chin up in the photos you posted in this topic.
I just saw a lot of pics that you put in a later topic. Super viewing.