Quoting Andrew now :
Jen Coates was on Thinking Allowed (BBC R4) (c. 16th June 2004) very interesting on men's language. She claims that men construct solidarity through playful conflict, while women do through mutual disclosure.
There was a good brief account of her research methods.
You can get it again at
http://www.bbc.co.uk/radio4/factual/thinki..._20040616.shtml
I'd agree with this - and I usually point it quite explicitly in my classes, after we've dicussed gender in general, and boys always say girls are bitchy - you just point out every time a boy says something "bitchy" to another boy - they do it ALL the time (presumably that is "playful conflict" ) I guess the bitchiness girls are accused of is more covert (behind ppl's backs!!