Where did "say cheese" originate from?

Question: Where did "say cheese" originate from!?
Best Answer - Chosen by Asker:

By saying "cheese", most people form their mouths into what appears to be a smile-like shape!. Additionally, the absurdity of saying "cheese" for no apparent reason can incite glee in some people!.

Try wikipedia =D type in "say CHeese"

It didn't originate!. They played with some words and BAM they found one that forms a smile like face thing!.!. hahahWww@QuestionHome@Com

who knows!.mayb france lol?Www@QuestionHome@Com