Have you read Ben Wakeling's blog, Goodbye Pert Breasts?
Despite the name (suggested by his wife, apparently), it's a great blog, a wry look at life from the perspective of a young dad. The thing that hooked me into it? His fantastic take on the heartthrobs of CBeebies. He has made the phrase 'meet the veggies' seem permanently dirty in my eyes!
My boy has always been very boisterous and, well, flaily. He's forever accidentally kicking people and breaking things. My big girl on the other hand is great at playing quietly by herself, and offers to help tidy up! When the sonographer told me I was having another girl I was expecting another calm and composed young lady. What I got was a very bouncy strong-willed girl who breaks stuff, is loud, and enjoys stripping off if we need to get somewhere fast (sadly she is not hiding a superhero outfit). People often call her a 'character'.
As for tempers, well my son always follows the path of most resistance, the little girl is the mistress of the cry/laugh as she is easily distracted, and the big girl? If she says no, that's what she means and there's no point in wasting your breath further.
They're all people, and they're all fab.
If you've got children what are their tempers like? And do you think boys are grumpier than girls, or vice versa?