wat is the best reply to when a woman says those ill fated words "does my bum look big in this?"

From Alan McCahey

This question has really stumped men for years, really because if the man says "No", the girl wont believe him, say "yes" and he’s in the doghouse all night and really there is no definitive answer. Although there are many different theories how to answer… such as the humorous approach: "That dress doesn't make you look fat. The fat makes you look fat." – not recommended, the quick getaway approach, “Honey, have you seen my keys? I swear they were right here. I'll go check the car while you finish dressing.” – smart, but my favourite has to be the randy approach: "Honey, you look great in anything, or nothing at all".