Just recalled this little story.
When I was 9 years old, in 1989, on our way from Bulgaria I had a full pocket of slimes (yes, yes) from the Black Sea (little white ones that look like French croissant rolls). They weren't showing out of their shells so I carried them no problem, in fact, I thought there were NO SLIMES there, and thought I'd take the shells as suveniour and show at home.
Just before the regional flight to our final destination, on a Let-410, I sat right behind the cockpit. Pilots left the door open (they always do that) and went outside for a minute. That was the time when I took the chance to glare what's inside the flight deck and... a couple of slimes dropped outta my pocket...
AFter the flight, the pilots came out laughing...
"Ha-ha, gotta show this to the ATC guys - SLIMES in the cockpit... Watch his face as I show it to him..."
Apparently, the pilots reported something like:
"Ground, I've got slimes in the cockpit".
And the ATC guy thought he was being fooled as he knew there;re NO slimes in that area - North Siberia...
Scotland - Russia