Student or Learner
When you take a photo, do you say "Cheese" or "Say cheese" to make the people in the photo smile? Or is there any other popular phrase?
It's the most popular choice of word though these days, some people will just pick a strange and random word which doesn't necessarily make the people smile because of the way it is said, but it might be such a funny word that it makes them all laugh. That looks just as good in a photo.
Also in Italy we say "say Cheese!!"
Mind you, if you just say 'Cheese' when pointing a camera at people, they'll understand.