Normally my reaction is: okey dokey! Bring it on! I do so love a challenge. Sex is best when two people are comfortable enough to ask from the other what it is they need in order to make their genitals sing. Now, I've been asked by women to do some freaky things, and my policy is usually to have an open mind, do it once, and if it isn't my thing, politely share with her that I really don't like having my junk tickled with feather dusters.
I honor this policy because I expect it to be reciprocated. If there's something I want her to do in bed (or on the couch, against the kitchen counter top, or around the corner from the bar) I expect her to return the favor, play along, and let me know afterwards if it's something she liked. So long as it's not illegal, draws blood, or involves tears, I think it's important for two people to be proactive about getting the other person off. This way, everybody get their cookie. Sex shouldn't be mutual-masturbation. Which is totally fun in it's own way, beeteedubs.
And let's consider the alternative here. I've banged women who are silent, like the Ghost of Christmas Future. Who, because of extreme bashfulness or past douchebag boyfriends, are totally uncommunicative in the sack. This is not good. It's a recipe for frustration, boredom, and worst of all, bad sex.