Are you insane?

That smile that i saw on you
it scared me quite a lot
it didn't look like you at all
it didn't fit the spot

your smiles usually pick me up
but this one brought me down
it looked like you could kill someone
if no one was around

and then I saw your eyes
they were even worse
they looked insane
and so did you

it seemed just like a curse
I thought you would go crazy
or maybe you already are
I really hope this isn't true

for you see
I like you
I've liked you since I met you
but now I have this doubt