What is a metaphor of smiles?

* Sunshine breaking through the clouds

* A ray of hope in the darkness

* A warm hug from a loved one

* The sound of laughter

* A child's laughter

* The smell of flowers

* A beautiful sunset

* A cool breeze on a hot day

* A refreshing drink of water on a thirsty day

* A soft bed after a long day

* A warm fire on a cold winter day