Sharing a smile is a universal language maybe?

agreed.
just like nodding means yes
shaking your head from side to side mean no
and shrugging your shoulders means I don't know

Nah. Last time I smiled at someone I almost got punched in the face :(

I would agree, but some time even when you smile others can be rude.

Crazy people smile all the time.

You got that right.

Yes

I actually smiled and got evils in one country I visited. I saw about 2 people laugh on my whole trip, crazy.

☺

ummmmm no .... most animals see the curling of the mouth or showing of teeth as a threat .

It usually is except with some demented people.

That and music