You present a large (32 cm long), shiny chrome knife (from the butcher next door). With a few slashes, you slice a large cucumber that you're holding in your other hand.

Suddenly you miss...
>>> The knife is stuck in the middle of your arm!

Not enough yet:
Now blood begins to flow in streams!

Absolute horror !

But no problem for you:
They pull the knife out of the arm, wipe away the blood, and the arm is unharmed again!