You remember the movie, right?  

“Ryan, some things in here don’t react well to bullets.”
“Yeah, like me. I don’t react well to bullets”  (The Hunt for Red October)

Well, I quoted the first line to my wife earlier today, and she said something that just made me pause for a moment..  “What does react well to bullets”?

I can’t think of anything that would react well to bullets…  Can you?
Let’s make this even easier…  It doesn’t have to be confined to a nuclear submarine.  Of course, it’s far easier to define “doesn’t react well” (eg. Boom), so feel free to offer a definition for “React Well”.

I guess you might be able to make a argument for a solid metal wall, but does richochetting off the wall really count as “reacting well”?  The only definition I can think of falls under Inert, and that’s a cop out.