Faking orgasm can be done by females in sexual encounters with the proverbial "oohs" and "aahs".They'll do this when the guy's techniques fall short of the female expectation or determination ot the erotic.But some of these verbal exclamations aren't always faked,and often they are.Sometimes the female is playing social politics,she's acting in pursuit of an ulterior motive.But first things first.The female of sexual age is never not in a state of sexual arousal,in the strictly physical sense.The vagina is always in some stage of sexual arousal at all times,however limited this level of arousal may sometimes be.I throw this in as a backdrop to the fact that the male can be conversely completely unaroused at a given instance or over a period of time.Male erection is more physically obvious than vaginal arousal.Vaginal arousal can be visually discerned in levels or reddish-pinkish coloration in that area,and/or by contortions of the inner and outer linings of the vagina.For instance heavy vaginal arousal will reveal intense coloration to the reddish from enhanced internal blood ciculation to the vagina,and/or by the inner vaginal lining protruding noticeably out of the outer lining[I currently forget what the technical names for these 'linings' are].An important qualification here.Female vaginal arousal is quite often not immediately synonymous with any determination to offer sexual consent.Males: keep this fact close in mind.Physical vaginal orgasm involves the vagina being noticeably ringed with partly congealed,partly transparent vaginal fluid;or a lesser orgasm,but still orgasm,of a singular flow of fluid from the vagina.The 'burping' or 'farting' sound given vaginally is somewhere between heavy arousal and actual orgasm,but it has been engendered by immediately previous visual erotic observation[and primarily so].