Vulval orgasm can be induced by either penetration or manual stimulation of her vulva (clitoris, labia minora). This kind of orgasm is accompanied by contractions of the orgasmic platform. After this kind of orgasm a woman may feel that she has just begun and may want more and on going stimulation and is capable of more orgasms at that point.

Vaginal orgasm is the result of heavy G-spot stimulation during vaginal penetration. It begins with the rhythmic contractions of the lower third of the vagina (pelvic muscles) and results in an electric discharge radiating throughout the entire body, in an intense contraction of all muscles, It is characterized by a woman involuntarily holding her breath as orgasm approaches and explosively exhaling at climax.

Uterine orgasm occurs usually as a result of deep vaginal stimulation of the Epicenter (Orgasmic pacemaker). A uterine orgasm is marked by heavy contractions of the inner vagina and uterus that trigger a heat wave to run from the lower abdomen through the chest bone. Even more than in a vaginal orgasm, a woman has a sense of deep sexual satisfaction after this kind of orgasm.

Blended orgasm is a combination of any or all of the above, characterized by both contractions of orgasmic platform and breath holding.

Note: Besides these four categories, there are other types of female orgasm, i.e. anal orgasm, nipple orgasm, urethral orgasm. In this penis size debate they are not of much use however. (If you really want to know, the average woman who engages in anal penetration usually prefers penises of medium girth and above medium length. And the average woman who enjoys urethral masturbation uses objects the size of a hairpin. This doesn't include porn star Ty of course who even penetrates her urethra with a penis!)