Updating this piece with a new reference:
http://www.scientificamerican.com/artic ... he-phallus
Like any good theory, this one supports predictions that can be tested, so here goes...
If you're in a situation where you're going to have sex with more than one partner, does that shorten your recovery time, relative to having a second go at the same partner?
Or, has anyone noticed a difference between having 2 pops with the same girl in an extended session vs having a short session with one girl and soon after another short session with a different girl? Does the 2nd pop happen sooner if you change partners?
I expect the FKK-dwellers would be in the best position to answer this. Any comments?
Also, thinking about it, the fact that the P4P women, especially in the RLD, have been fucking other guys just before you, does that make the whole experience "hornier", meaning a lot more vigorous deep thrusting than you might do with a less promiscuous partner?
Wouldn't it be great to get this site endowed with some kind of research funding?