It depends on which type of smile we're talking about!
If it's a really good, happy smile, then smile.
If it's just an average, normal-day smile then laugh.

NONE

Both(?

But that's not common,...
I don't like smiling.
I usually don't.
It hurts to smile.
I love to be sad.
It's much better.

I love to laugh <3
at myself
friends
family
a rabbit
in silence
during class
and ALL day long :D Lololololololololololololololololololololo­lol­olo­lol­ol

I don't smile alot