I think that most of the studies and discussions I have heard on sex and orgasm, are too superficial, approaching humans and their thinking, feeling and acting as if humans would be nothing but slightly glorified animals - as if humans would not have any real moral, philosophical and practical concerns in all spheres of their life (including sex). (Of course, many humans have indeed become nothing more than glorified animals, and are even proud of it ...) I would think such "small introductory orgasms" exist. They are based on particular expectations (that are triggered by certain verbal, visual and physcial clues). Expectations are based on beliefs. Beliefs are based on socially transmitted cognitive content, vicarious experience (such as from watching television or reading magazines on a particular topic) and direct experience. A particular person may or may not have those expectations.