We have been told by a few neighbors that other neighbors we didn't know said things like, "have you seen their pit?" Our neighbor quickly corrected them and said that not only was he not a pit, that his jack russell would more likely bite than Tyson.
We have educated our neighbors on our dog and go introduce them. On our other side, the husband is pretty afraid of big dogs and so is his wife, but they aren't scared of Ty. As a matter of a fact, their little girl (5 yrs) and all her friends come over to play and she can make him: sit, high five, high ten, turn around, and lay down. She is only about 35-40 lbs, so Ty outweighs her by 25 lbs and she commands him (of course this is after us teaching her how to behave, like not jumping around). Dex is still a puppy, so he gets excited still but he will get there.
As far as PetsMart, everyone LOVES boxers around here. We feel like celebrities because adults and kids alike all want to come see and pet our dogs. I don't think I have ever had anyone there mistake him for a Pit there, but I have had a few ask what breed he was because they thought he was so beautiful. But you know, although I don't see how the heck you could mistake them for a Pit, I hate that Pits are judged too. If Ty did happen to be a Pit, big freaking deal! :(