Crossword puzzle clue "i would have thought better of you"

"I would have thought better of you..."

Sounds you might make when I say "Would you rather watch your parents have sex or have your parents watch you have sex?"

"You better, you better, you ___"

"Would you eat them in a box? / Would you eat them with a fox?"

"You know that it would be untrue, you know that I would be a ___"

"Would you eat them in a box? Would you eat them with a fox?" asker

"I would have thought it was obvious"

"___ would have thought?"