Its kinda silly actually.
People does that because they want to generate attention to
themself.
When you are sardonic and respond instead with indifference & a
good single sentence that makes them pay attention to how they will
lose that attention. These gals will stop.
from the: "Oh, you got scars on your hands. accident or cut
yourself?"
to the: "Well, too bad then, with those scars, you can never be a
actress, air stewardess, model or even employed for most high
flying jobs liao. Too bad, considering you look so pretty and can
go far in any industries".
Works everytime.....except to those that is already dead. 
