i'm not into sadomaso, but if i were, i would never do it with a younger girl (i'd want a girl over 25, at least, better if she's 30-35). plus, i could never do that sort of thing with a woman i personally know... it'd be strange...
PLUS, when a 16 year old girl fantasizes about sadomaso, it's just that. a fantasy. i don't suggest that you should propose it to her, unless you can make it appear as a joke... meaning that you shouldn't be the one to bring up the topic... if you are talkin' about that, it's ok to crack something on the line of:
"if u wanna try, i could teach you..." with a light smirk on your face, so that she's not capable of gettin' if u r jokin' or not
otherwise, shut the hell up or the whole school will have an image of you with a pair of bare-butt leather pants with something in latex in your hands... not too good for your reputation, man
if by hard stuff u just mean anal sex, that's ok... i'm ANALizing my 16 yr old girlfriend almost every day
