CFNM is a fetish interest in "clothed female, naked male." It's a femdom thing, not an exhibitionist thing--the idea isn't "hey ladies lookit my wiener" so much as "hey slave get out your wiener." Here's a very NWS site that illustrates. ("CMNF" doesn't seem to be as much of a distinct fetish, although it certainly happens in maledom. And in society, grumble grumble...) I'd heard of CFNM before but I got really thinking about it today.
I can't decide whether to love it or hate it. On the one hand, I love the idea of good-looking men submitting to objectification and ogling. CFNM porn, although aimed mostly at straight men, seems to break the mold of the ass-ugly or invisible male pornstar--all the CFNM models I've seen have been cute as hell, which is awesome. Somehow this seems more like real submission than femdom porn where the women are wearing crotchless nippleless leather fishnet getup things--the male submissives are the only ones sacrificing their dignity for once.
And it's acknowledging that women actually enjoy looking at cute naked men! From the men's perspective even! This is awesome!
On the other hand... the thought I have looking at a lot of these pictures is "gosh, if he was naked in front of me I wouldn't be leaving my clothes on." Even as they show women enjoying the sight of wang, the CFNM porn also seems to buy a little into the whole "women don't really like getting fucked" mentality. The women seem more amused by the naked men than aroused by them. "Dance for my pleasure, boy" just isn't as fun if there's no actual, y'know, pleasure.
There seems to be a running theme in BDSM imagery, CFNM and otherwise, that women are humiliated by being fucked and men are humiliated by not being fucked. That if I had total control over a horny slaveboy, I'd use that control to deny him my pussy. And... hell no. Maybe I'm just not cut out to be a femdom, but if I had a slaveboy, the poor guy would have friction burns.
CFNM makes for some awful cute pictures, but I think NFNM is more my style.