Originally Posted by GUWonder
It's a reference to, amongst other things, sales pitches for the BMW 750ilP that took it from "bullet-proof" to "bomb-proof" for a while .... even after some who had bought it were killed. There's also the "bomb-proofing" done for certain government vehicles that are mostly meant to deal with landmines, but often do a very poor job of that too.
Anytime you see the term _anything_-"proof" you can be pretty sure that it's a new pinnacle oh human hubris, just waiting to be shown how ut can fail. The Titanic was "iceberg-proof", wasn't it?
And the new favorite: "idiot-proof" - - these things are _always_ designed to demonstrate how idiots can find ways to muck them up far more creatively than the people who built them!