brutal honesty is the best solution. if you've ever had something sugar coated to you, it sucks because it can give a different meaning to what they're saying. and if you've ever tried to sugarcoat something and the person just doesn't get it, that's frustrating as well. Just be brutally honest.
And I don't mean sugar coated, I just mean instead of "I wanna fuck you till yuo scream" you say "I am immensely attracted to you and wouldn't mind..wink wink" or whatever.