I had a very odd one last night, but think more to do with being poorly than exante-dreamt that I had a really dry mouth & was really thirsty, but everywhere I went no-one had any water to drink! I kept telling everyone I'm supposed to have 3 litres a day but no-one was listening! Then I woke up & funnily enough had a really dry mouth! Glad I took a bottle of water to bed with me!