It is really embarrassing. I don't think that it's Alzeimers - they both fully understand what they are doing and why. It's my dad more, though. My mother is actually a stepmother. She's been married to my dad for years and years but she's always been slightly enthralled by him, looking back. I don't think she'd steal sugar and the like alone but it gets 'approval' from my dad when she does! In fairness to them, I don't think they go out for tea and cake a lot, by any stretch of the imagination - it happens when they come to visit me. I try to keep them out of my house because I have cats and my dad always has a "witty" put down about my decor or my tidiness. I do think they must go at least once a week for tea though - certainly their house is full of condiments from various well known chains. Oh dear!