I'm the elder of two. We have been so stereotypical in birth order things it's not even funny. In terms of typical teenage stuff, I was the total "fight the power", take on the parents and argue for JUStice type to get things like a 30 minute extension on the curfew. My sister? Learned how to shimmy down the drainpipe by her room. I walked the line on rules and regs, mostly because I firmly believed that stepping out of line would bring down the threatened consequences. My sister? Learned that while my parents talked a tough game, they never followed through on the most dire of consequences.

Character wise, it's totally true, too; I'm more bossy, my sister is more passive. I tackle things head on, she's more likely to go behind the scenes.

Now, I married a "baby" of the family, but a twin as well, so in a lot of ways he doesn't fit the mold at all well. DH had a lot more coddling as a child than I did, but being a boy in a permissive household, he's also a lot more likely to go from thinking of a plan straight through to implementing it without stopping to consider consequences (as I do). DH is also very strong willed and out-front about it; we spend a good amount of time negotiating a path, or arguing when we lose the diplomacy!