Are you able to suck air into your rectum or vagina without utilizing external devices?
I once knew someone who was rather proficient at using the muscles of his anus to create a partial vacuum in his rectal cavity, sucking in air that he could later expel through his anus in order to make authentic-sounding “farting” noises. However, I never got a detailed account of his technique for doing this and, to this day, I remain unable to perform this feat.
I also understand that there are also certain porn genres that feature women who do something similar using their vaginas.
Can you suck air into your body using only your anus / vagina? How do you do it??
Thanks.