Today I got asked 'are you expecting?' With an excited look at my tum - 'no' I replied 'I'm just fat'. Cue much back tracking and mumbling about the way I stand 
As a size 14-16 it's not news to me that I don't have a flat stomach but I can't say I felt great about being asked if I'm pregnant when I'm not!
I would never ask unless it was a really close friend, do many people ask everyone with a stomach pooch if it's a baby?