I do exactly that with girlfriends all the time but it is a very carefull ballance, and sometimes I say stuff without thinking, i.e. with my ex and the contents from the chip shops in the car she said, "Ohhh your car stinks of fish" so i just instantly said, "well shut your f**king legs then" without even thinking, she then threw a hissy fit... but the most important thing to do when a girl throws a hissy fit is to stand your ground, smile and say it in a way which shows that its a joke don't back down if it upsets her. If you go all sensitive and caring on her at this stage she has won, tell her it was a joke and if her hissy fit continues just let her keep bitching until she says sorry, else shes won... and we dont want that. That was the shittest reply ever and I'm sorry, but i spent my time typing it so im not, not posting it EDIT 4 for my Nick Pyke like spelling: Be nice and sensitive when you want something and other than that treat her like you would your best mate and don't be all poncy and let her take the piss.