a smile

                                 A smile

A smile: a smile is a ones features into a pleased, kind, or amused expression, typically with the corners of the mouth turned up and the front teeth exposed.

“A smile is a curve that sets everything straight.”    -Phyllis Diller

I think this quote is true because, when you smile it makes everything straight when it comes to people, for an example like when your friend is feeling bad/sad comfort him/her and just make them laugh because, when you that they smile and when there happy you get to smile…2 smiles in one.