Seriously. Some years ago a university published guidelines recommending a young gentleman (or lady, it being college after all,) should ask permission at each stage. "May I put my hand on you luscious rack?" "May I put my hand in your hot, sweet pussy?" "May I put my wiener in your lovely butt?" Now me, I actually find that hotter, but I'd assume for most people it could kill the mood. So what does constitute consent? A smile? A casual brush against the thigh? Her jacking your penis as she begs you to fuck her? What's you opinion?