911 - Razor blades in the ashtray.
On a related note - many years back my wife goes into labor, we jump in her car to head to the hospital, I'm driving of course, and I adjust her seat for my height. I hear something glass break and reach under the seat and pull out a broken crack pipe
My wife is the most straight arrow person you would ever meet, with the stress of the situation we both started laughing so hard I thought she was going to pop out the baby right then.
