Obviously you get the good the bad and the ugly in all careers, and 98% of flight attendants are brilliant and do a superb job. If you fly a lot, you're bound to come across the odd bad egg/experience, the same as if you go to lots of restaurants etc.
I've not (touch wood!) had any really bad flight attendants. Once when flying from London to South America in business (BA), I pressed the call attendant I think 3 times during a 13 hour flight. The flight attendant came and said "What can I get for you NOW?
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Another time was flying to the US in Premium Economy, and nothing in particular was wrong. However, the flight attendant was just so sharp. I asked if I could get a glass of water and she snapped that I had to go to the back to go and get it. I went to the back into regular economy and the flight attendant was so sweet!
What are your stories ?