I had this at Gatwick last year...
"Hey idiot, get your goddamn bags off the (expletive) belt! Hurry the hell up!"
At which point another passenger decided to take advantage of the confusion and tried to steal my phone...
"God (expletive) damn you! Are you trying to make my (expletive) life hard?! Just take your bags and go, you're holding up my line!"
Approached the airport, "we do not comment on security matters".
"How can I take this complaint further?"
"You'll need to ask your solicitor to contact our legal department."
And then there was Stockholm Arlanda...
(On the way in) "Good morning Sir. Welcome to Stockholm."
And on the way out...
"Sir, is this your bag? Can you please turn the laptop on for me?"
'Do you need me to log in, it's for work...'
"Oh no, I just need to see it turn on."