...you are sleeping on a plane and the person next to you hears you say, very clearly, "Scoop your fighters!"

...you e-mail someone that you're going to pod yourself to New York.

...your collaborators notice the odd phrase "charred micro circuit" in the middle of a paragraph in your paper.

...your friends call you by your game name, and not only do you not mind, but you respond every time without hesitation!

(A friend did the first three; several of us do the last one.)