Okay I'll bite too ... Pictures of Natalie Portman?

Actually the liquid prohibition in airports do serve a purpose. It is the perfect customs barrier.

You cannot buy any local beverages and take with you because they will most likely break due to the low temperatures in the luggage compartment if you put it in the checked in luggage, and if you put it in the hand luggage security will throw it away.

This means that if people want to take liquor etc. home they will have to buy it at the last connecting airport thus increasing revenue. Also all airports on the way (plus airlines that sell beverages on board) will recieve extra income from water sales etc.

So instead of buying a cheap and good champagne locally in France for instance, you are forced to buy an expensive non-local champagne in the airport.

And the really cool twist: We are doing it for security, so you - the traveller - must pay for all the security checks through your ticket and airport tax costs!