FAQ - i also have a friend who says this on the odd occasion, and although I find it a bit odd, it has not really had much of an impact, however - this person was making a really big thing of it, like she wanted him to be flirting with my daughter, and actively 'encouraging' what she considered to be 'flirting'.
It did not strike me as a harmless through away comment, but something that she says regularly every time her son encounters a girl.
I found it, well debasing? Is that the right word?
I suppose that's a bit different - I only say it when DS2 and 3 are acting all "coy" (turning head away slightly, fluttering their eye lashes etc at the girls/ladies.......they never do it to the boys/men that coo over them )