The act of pinching shut (with thumb and forefinger) a woman's nose while receiving fellatio; most effective when employed just prior to the release point due to the gag reflex and ensuing swallow that the woman is forced to do to continue breathing. A great first date ploy, as it sets the stage for what the rules of engagement will be going forward.
After I gave Tammy the valsalva, we were bound to get married!
Valsalva is a term describing the "bearing down" activity which occurs during sex which results in a sudden onset of amnesia for preventing the formation of new memories as well as complete loss of memory regarding the event during the maneuver. STudy to support this was done at John Hopkins and published in The Lancet.
"DID YOU SLEEP WITH HER?!!!"
"I commonly have episodes of valsalva...so I cannot really answer this question....I simply do not know."