Serena is what I'd call a brick house, you know, like the song Kurt Browning skated to. Stacked.
Anyway, I can understand that people might wonder about Serena because of her shoulders/arms. Her biceps and deltoids are huge, bigger than what many men have. I think she's far more muscular than Roger Federer, lol, but he's never been muscular like other guys. But, she's always been big like that. With Stosur, though, I really wonder about PEDs. She is so big right now and it overwhelms the rest of her so much that every time I see her, I wonder about drugs. It's just so different than everyone else.
I don't think it's actual stupidity that makes people bring the issue of drugs up every time they see a female athlete (or male) with huge muscles and big success. I think many of us have become pretty cynical about successful athletes after so many have eventually been caught cheating in some way. You really don't know who is clean and who isn't, especially after many of those cheaters tested clean for many years.