Monica,
Of course this is too late now, but just as a thought, what if you did the unexpected? Embrace the conversation? Basically answer back, "Why, yes I DO clean up well. Your son said I was hot?? Really?? I hope he isn't planning on asking me out on a date or anything. Come to think of it, it seems as if YOU'RE quite intrigued as well. Is there something you're not telling us?"
It's an old Tai Chi strategy, use their force against them. When they push add a little energy in the same direction, and they overcommit and fall off balance. Essentially you flip it on them, and then they have to defend themselves.
Just a thought
