Easy, you just teach it to spit on command...
Seriously? Running dry happens, multiple male orgasms (where only the last one is wet) happen, but they are still orgasms.
I have heard guys claim they faked it (whilst wearing a condom) so they could go to sleep, but have never had sex quite that bad.
It is also far harder for women to fake orgasms than often thought, if you know your sexual female physiology.
Noise is no indication; some girls are silent as the grave until the moment of truth (a little off-putting the first time you sleep with them), others make loads of noise until they come and then not only stop making noise but also stop breathing for what seems like ages (again, a little off-putting the first time, especially for them when you start CPR), I don't know any way a man or woman (yes women can too) can fake ejaculation short of camera tricks, but you can normally feel the pelvic contractions, and the strength and regularity is just different to when it is deliberate.
Re.spam. Okay, I can understand the Viagra et. el spam; problems in that area can not be nice. I can understand the attraction of claims for pills that make you longer (although like the rest of male humanity would deny any need) - and if I responded to every lengthening spam I got (do they know something I don't?) I could make love to female members of JWD in New York without leaving my desk in Holland.
But what is it with these spams that offer to double the volume of your ejaculate? Never, ever has any woman said "oh, that was nice, but I'd like you to have more sperm". At least not to me... and I don't think this is due to me having nuts like a chimpanzee.
Any guys had complaints or girls made complaints about the volume of sperm?