A while back, I was departing Hong Kong, and there was secondary screening happening for flights to Oz. The security bloke decided my toothpaste was a great danger and confiscated it. (As a side note, given that small toothpaste tubes are 110 g, why on earth did they select 100g as the limit?)
We departed, and a bit down the way, the aircraft decided to blow up. Strangely, taking my toothpaste didn't seem to help.