Trebuchets Can Carry On

I'm going to be flying AirBerlin in a few months. I checked their baggage policy and came across this:

The following articles may only be carried in checked baggage:

• Cutlery
• Razor blades
• Toy guns and commercially available toys that could be used as a weapon
• Catapults
• Sports rackets and other sports and leisure equipment that could be used as a weapon
• Knitting needles

Just thinking what the airlines did the last time I checked my catapult... Never again. Never ever again.