Why do people pucker up/make a duck face when taking selfies?

The same question has already been asked on Quora: Why do girls show the duckface these days while posing for pictures? You are sure to find a set of convincing answers. read more

Perhaps some people's lips are just too small and thin to successfully accomplish this and they ended up with a duck face. Some women think that taking pictures of themselves drunk or otherwise intoxicated are amusing and sometimes they make a duck like face in their inebriated state. read more

Body dysmorphia. Pouting changes the shape of the face - making it thinner, and with more defined cheekbones. read more