Star Trek: Voyager1995

[Neelix and Paris have set up a shell game to fool the Doctor]

The Doctor:
This looks like an interesting game. May I have a turn?

Tom Paris:
Well, be my guest. But, um... you'll have to wager something.

The Doctor:
[to Neelix] If I win, you take three duty shifts in sickbay.

Neelix:
And if I win, you take three shifts in the kitchen.

The Doctor:
Done.

Neelix:
Ready?

[he resets the game and begins shuffling the cups]

Neelix:
Now, watch carefully. Round and round they go. Follow the tera nut if you can, but be careful, the hand is faster than the eye.

Tom Paris:
Careful, Doc, try not to blink.

The Doctor:
Don't you worry, Mr. Paris. You have to get up pretty early in the morning to fool my optical subroutines.

[Neelix finishes shuffling]

Neelix:
Where is it, then?

The Doctor:
In your left palm.

[and to the other gamblers' great bafflement, he turns Neelix's left hand around, which indeed contains the nut]

Tom Paris:
How did you...?

The Doctor:
Superior visual acuity. See you in sickbay.