Does your groin react everytime you see a good looking shirtless guy? Can you describe the sensations you get?
Had to look up what FAO stood for (For Attention Of) It depends on whether they're in pictures, in person or if I'm making physical contact with them. Even then, it's more of a stomach feeling than a groin feeling. It ranges from basic appreciation to 'oh my god this is amazing and I don't want to stop'.
Most of the time I'll notice someone is attractive and appreciate it, but won't feel anything. Very rarely, however, I will get a nice feeling. I'm not sure how to describe - it's not tingly or warm or anything, just pleasant.
^^ I feel that scrotum sexual sensation and always feel lust when I see a shirtless man or naked man.