Isamaya is standing in the kitchen pouring some tea.
Mike runs in, a light sweat on his forehead.

Mike: You don't know where this has come from do you?
Isamaya: What is it?

Mike holds up a screw

Isamaya: No
Mike: No. Neither do I. I've been looking at it all day, there is something strange about it.
Aaahh.. Its got a reverse screw thread.