If I was the finder of that note I would still make sure I had a good shit before reporting it. Rather die with empty bowels than live on, only to spend the next 15 hours jamming my sphincter shut while we waited for the unscheduled landing, the hostage negotiators, the SWAT teams etc.
Scary stuff on the Krakow-Dublin flight, someone put a note in the shitter saying there's a bomb on board, two men aged 47 and 26 in custody:
https://www.theguardian.com/uk-news/2020/jul/14/two-arrested-after-plane-diverted-to-stansted-in-security-alert
I wonder if they were Poles? Not the best way to protest the election.