Chuck,
We all well know that the threads of a screw make it exceedingly difficult to "pull" one out of whatever object it was screwed into. Second, we all well know that screwdrivers, are a device commonly used to both unscrew and screw a screw. Third, we all well know that screwdrivers are pointed objects, and as such are now barred from airplanes. If you wish to transport your screwdriver (yes, even one for your eyeglasses), you will have to put in your baggage that is being checked onto the planes cargo hold. Fourth, if one was so inclined to smuggle a screwdriver on the plane, they would only be able to sneak one of the large plastic Fisher-Price work-bench screwdrivers in their pants (trousers for some of you foreigners) leg, which is bound to cause other sorts of attention from security. Provided one succeeded in this attempt, they would find it for naught, as the Fisher-Price "tool" is much too large a gauge for most machine screws. It's also pretty much useless on rivets as well.
-Tacks
