MISTAKES COME IN 3's so they say....

Well I managed to accrue my 3rd food-based cock-up to follow on from the Prawns and Percebes. Let's hope this is the end of it and I can get back to some good gastronomic discoveries. Anyway I was in one of my favorite tapas bars and wanted to try some new stuff. Liked the sound of 'Aros de cebolla rebozado' believing that aros must be Catalan for Aroz (rice). So I had made up my mind this was some kind of interesting rice dish with onions. I asked the waitress and she gabbled away at me and I made the fatal mistake of nodding when I didn't really understand. Actually I did understand her, but her explanation didn't match my preconception, so I assumed I had misunderstood. She said 'it's a bit like Calamares (fried squid rings) and very delicious'. I assumed there would be squid in the rice dish. So I ordered it and almost burst out laughing when I realized what it was. DEEP FRIED BATTERED ONION RINGS!!! 'Aros' has nothing to do with 'aroz' but means 'ring' . So I sat in the deepest of Catalan bars trying to explore the inner mysteries of Catalonia's most fundamental ingredient and all I get is a McDonalds-ish bowl of onion rings. What's that expression about 'assumption being the mother of all cock-ups......'?