There's a whole list of stuff for both my parents (mostly my mum, though).
Mum is a Christian, has always been one to worship Christianity (not obsessively, but she goes to church and doesn't like us blaspheming) but she is pro-choice. Told me that she used to go on protest marches to show she was pro-choice, and this was only revealed to me after she found out that my girlfriend and I have been having sex. Her telling me about being at a house party where the fire brigade had to be called makes me believe she was a party animal, and the unfortunate truth that her and my dad still have sex nearly killed me inside.
My dad is just dull, though. His brother is the interesting one with the motorbike (which he crashed on the Nurburgring) and the music festival memories, but I found out that my dad used to have long hair and a motorbike...which he only used once and then sold because, and I quote, 'he thought they were crap'. He's very bitter about his father, who, as it turned out, used to beat him as a child. But my dad also met Gary Gygax, which surprised a lot of my friends.
There's stuff about other family members that's pretty shocking to me, though. Finding out that my mum had an older brother who died when he was 3 days old and that I was probably named after him despite my mum denying it. My grandpa being married twice was also a shock, even more of a shock being the fact that his second wife was my biological grandmother's (his first wife's) sister! However, everyone in the family supported their marriage, as both their spouses had died around the same time and they had supported each other through the grief and believed that their late spouses would have approved.
My mum's stepsister is in her second marriage, and my mum only told me recently that her second husband was her next door neighbour during her first marriage. Apparently she's still friends with her first husband, and when my grandpa (her stepfather) found out that she had split up with her first husband, he drove for 7 hours up to the north of England to 'have a chat' with her now second husband, because he believed that he was responsible for her marriage falling apart. Seeing as her second husband was high up in the police and has the scars to prove it, my grandpa was a badass. Luckily, they got along and there was no violence, but still. My grandpa had balls.
