I have never done personal training but I am very knowledgeble and understand what works to hypotrophy a muscle. When he called me about "muscleshot".. it took me offguard. Here I was telling my family how cool this guy was... and then the call comes in.
I kept on repeating. What do you mean muscle shots?
??
Then I let him know that I would be willing to take progress pics of him and emphasis beying on him! We'll see how long my personal training career lasts.. lol
Tell him to buy the Arnold encycolpedia. it could just be that he honestly wants to learn the muscle groups and you are the closet thing he has to an anatomy chart. If so, the Encyclopedia will solve that.
it could be that to look like YOU is his ultimate goal. In which case, he'd want pics of you so he can strive for it and maybe one day match it. Seeing his pics come closer is inspiration, okay. Weird, sure.
Next possibility - he is a little bi, and you float his boat. The pics will make his month, and maybe lead to lunch or something, he hopes.
Finally... Maybe he just wants to jump your bones.