Backhanded compliments are the best, aren't they?
When telling someone, who has always had a way of making me feel a just little bit bad about myself, my current pant size (not totally out of the blue or anything because if that was the case, I would say nasty stuff to me too)...would I expect their response to be anything other than what they said: "Holy Shit! That's the size I wear"?
Did they mean, holy shit I can't believe your fat ass was able to squeeze in to the same size as me? Or maybe it meant, holy shit, you're tiny? Or who knows what it meant but I am not 100% sure it was a compliment.
"Poor girl. You just can't lose those boobs, can you?"