If humans didn't evolve to laugh or smile, how would we express our happiness instead?

doctorwho1011s avatar Entertainment & Hobbies
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Purring.   biggrin smilie

@DandyDon

He seems a bit spastic.   wary smilie

@Thinkerbell He seems a bit spastic.  

It could come in handy, if you were to become happy while painting..

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