[rndstr]

In Switzerland's airports they give you a receipt where you can collect it for $10 when you get back. They once confiscated a bike tool of mine. Why they only picked the adjustable wrench out of total 3 potential weapons is beyond me, though.

[Starwatcher2001]

You could have then gone to the duty free shop and purchased two glass bottles of vodka. Smashed together they would likely make much better weapons.

[knodi123]

If you smash two bottles together, do they both break? I would have expected that you'd always end up with one broken bottle, one whole bottle, and (optionally) a fair amount of your own blood.

[pritambaral]

When two cars collide head-on, does only one of them crumple?

I figure the same effect would apply to two similar glass bottles colliding.

[knodi123]

Except a car can crumple almost any amount from zero to tiny cube, while a bottle can only be perfect or shattered. Plus, bottles have strong and weak points, and it seems less likely that you'd bang two equally strong portions of each bottle together; more likely you'd be hitting a strong corner with a weak wall.

This is SO off topic, and SO unimportant.... :-)

[wrboyce]

Last time I passed through a Swiss airport I was handed a screwdriver to gouge out the contents of my Zippo lighters.