the kinkier the better. i detailed the list of things that i consider 'against the rules' in one of the other threads which i'm too lazy to go look up at the moment.. but just for a few of the things i find most interesting...anal sex, dildos, strapping one on and being 'the guy', bdsm, foods, and spending considerable amounts of time where wearing clothing is against the rules.
oh, and as far as the safeword thing goes, i like to 'play chicken'..... in other words, get crazier and crazier and see how far you can push each other before someone calls the safeword.
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kuru
'if your children ever found out how lame you are, they'd kill you in your sleep.' -frank zappa
It's a bit interesting, I'm kinda curious about it, but, obviously it's a bit...frightening. 
