Very common and perfectly normal, nothing at all to be embarassed about I don't know that I believe the first of the following two discussions, but it sounds too fun to not include it...
3. Queef
from Urbandictionary.com
Air expulsion from the vaginal area usually after sex. In the eighteenth century, it was common practice for small groups of well-to-do Southern women to each lift up their corsets and "queef" at their leisure on warm, summer afternoons. Typically performed on balconies or porches, these women would insert various large objects in their TOOTS and slowly pull them out to create the desired sound. These "porch parties" would provide hours of fun for the ladies while the men were away, and, from a practical standpoint, at times, enough air circulation as a respite from the brutal summer heat. Small wagers were often placed with the winner going to longest continuous queef, highest pitch, lowest pitch, smelliest, and wettest. There was also the queef sing-a-long; and a special prize was given to any women whose queef could attract wildlife.
Queef
From Wikipedia, the free encyclopedia.
A queef is the slang term for an emission of air from the vagina, often during or after sexual activity. The sound is somewhat comparable to flatulence from the anus, hence the nicknames "pussy fart" and "vart" or the more technical term "vaginal flatulence". The sound is most often associated with air expelled during or after vaginal intercourse but can also happen during cunnilingus or anal sex.
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