Just take it all in... there really isnt anything u can do to stop it from happening...i am in my 2nd cycle and i still look at guys bigger than me and say to myself, "they're using mad juice". The comments are just part of the game, that ignorant people will use to make themselves feel better.. The gear alone does not make someone big, the diet, training, knowledge and dedication are what makes a person grow, and AS just helps along with those key factors....
I get comments made to me all of the time, by both my friends who dont know i'm using, and also from people i dont know..to my friends who ask me, i just say "yea i'm on every steroid they make" and it usually ends the discussion, and to others i just ignore the ones who will make the comments behind my back, and then for the few with balls enough to say something to my face, i just give them the proper nutrition and dedication speech, along with andro and creatine.
Just get used to the comments bro, but dont let them get to you, use them as motivation...good luck with ur cycle