I once worked in an office in Cavern Walks. Mathew St was always being taken over by film companies, and a bloody nuisance they were too. On one occasion they had invaded our building to install lights from above the street, and in the lift with many others one lunchtime, someones asked what they were filming. A young lady at the front of the lift condescendngly said - in a very posh accent - "Actually, we're filming a comedy!"
Quick as a flash, came a comment from the back of the lift. "We'll be the judge of that, love!"
The perfect put-down!