There is almost always a Christmas fight in my family. My dad wants to cuddle up with my mom but she would rather like to prepare next morning's brunch for the greater family (aunts, uncles, cousins etc.). My dad and my brother sit in front of a laptop or some other technical device, which is always a source of fighting because they have radically different approaches: My brother is a lightning-fast computer nerd and my dad is easy-going. They should never mix. My brother wants more attention because everybody decides it is a nice atmospehre to read a good book, while my brother has all the books he got stacked up next to him and has his laptop packed out instead. I get pissed off because I am the strongest member of my family yet when I carry a box containing six wine bottles upstairs, somebody, usually my brother, asks me if I need help three times in a row. And in general I get pissed off because I sometimes feel like I'm not taken seriously (especially by my brother) because I am the youngest family member. My mom is stressed out because she does all the work but insists that it is her job and nobody should help her.
It's been a lot better since I moved out from my parents, though. Back then at one year, I made a list of all the fights, what they were about and who started them. Nowadays, it's more like little tensions that we look over often enough.