Is it right to act this way in front of stuck up girls?

It sounds like you are fighting fire with fire. Everyone acts a certain way for a reason; instead of reacting to their stuck up behavior, why not try and move past that? In fact, by reacting to them the way you do, you are justifying their behavior, or, lowering yourself down to their level. Why not be better than them? For them it is an immature, attention thing. They think they are cooler if they act stuck up. But if you don't react to it, you will prove them wrong. Reacting to it and lowering yourself down to their level just gives the, exactly what they want: it gives them the pride and attention that was the reason for their attitude in the first place.