Flying back from Athens on 4th September, a woman came tearing up behind us in the priority line quite literally screaming at the check-in staff that the wait was unacceptable. Some connecting passengers in front had a visa issue but to put it in context, this woman was several people behind us and at this point we had been waiting just under 15 minutes (departure wasn't for another 2hr 5m).
Some absolutely classic lines were screeched such as "You call this priority?! I've seen grass grow more quickly!" and "BA is no better than Ryanair, none of us should even be here!"
We were in the second row of CE on the 767 and when she passed me I saw she was in row 19 in ET and she was a Bronze. Regardless of this I've never before seen such aggressive and uncalled for behavior in all my travels.