A sarcastic rejoinder feigning gentle surprise at another person's naive,
glib, obvious,
half-baked or
banal observation. (abbrev. of "Do you really think so?") cf.DUH
Person #1: "Gee... outfitting all my bridesmaids in
Vera Wang and
Manolo Blahniks might eat into my
bridal budget..." Person #2: "Ya thank??"