This is a weird one from The Museum of Retro Technology: cutlery/gun combo!
The knife, fork and spoon shown in the picture all have built-in flintlock pistols.
Note that the barrels point backwards, towards the user, so they're not designed for plugging your host if he makes impertinent remarks about your table manners. It is difficult to imagine a social gathering where it is appropriate to shoot off your own elbows.
The fork follows the pattern of the time; it looks pretty lethal on its own account.