Liquids Onboard

Since I never check a bag, I am very familiar with the airport security 3-1-1 rule (and just how far I can bend it). Nevertheless, I still found myself having to dispose of liquids on a recent flight back to the States. After having gone through immigration, customs and security, passenger carry-on bags were searched on the jet bridge before boarding. Once again, any items that fell out of the 3-1-1 parameters were confiscated - even if purchased in the airport.