[The Man in Black has just challenged Vizzini to a battle of wits for the Princess, to the death.] [hands a small tube to Vizzini]

Inhale this, but do not touch.

[sniffs the tube]

I smell nothing.

What you do not smell is called iocaine powder. It is odorless, tasteless, dissolves instantly in liquid, and is among the deadliest poisons known to man.

[smirks]

Hmm...

[The Man in Black takes the two wine goblets and turns away from Vizzini. He returns a moment later and, after shifting the goblets around quickly, sets them down in front of himself and Vizzini. Vizzini smirks again.]

Now, where is the poison? The battle of wits has begun. It ends when you decide and we both drink, and find out who is right, and who is dead.