Last year, at T5 as usal, I took my raincoat off, and it went through the scanner, together with my carry bag and the computer. Get into the lounge, take off raincoat and hear a dull 'clunk'. Investigate to find that a 150mL can of Malvern water, scrounged from CC on the previous trip, forgotten and not drunk, was in the raincoat pocket.
'Nuff said.
Outrageous! Next thing you'll be posting that you and all the other PAX survived the next flight.