Hold Your Tongue!

I cannot very well
Hold my tongue
When I've learned
The fine art
Of nearly
Chewing it off
Swallowing
Venomous words
That I know
Would
Find the right vein
Later feeling
Guilty
Hot tears
Let it rain
Let it rain
But when you see me
I'll smile
Holding on behind my back
My tongue
Let you decide on your own
Wondering all the while
If anyone really sees me
Can you even hear me?