This might seem like a silly question, but I feel the word is in need of a concrete definitions. I have heard of ejaculatory orgasms, non-ejaculatory orgasms, g-spot orgasms, clitoral orgasms, prostate orgasms, anal orgasms, full-body orgasms, multiple orgasms, and even nipple orgasms. I have a feeling that some people might just be feeling a whole lot of pleasure, and so they call it an orgasm, when its really just plain old sexual pleasure. Is there a definitive definition for what makes an orgasm, an orgasm?