When you take five guys and one girl and have sex with her. Three dudes picking a whole, either mouth, ass or pussy. While they fuck her in her wholes she takes the two other guys standing at her side and begins jerking them off as if using ski poles.
Dude #1: Man we need to run the ol' air tight ski pole on this bitch.
Dude #2: Dude I get one of the wholes no matter what.
Dude #3: I get ass you get pussy?
Dude #4: What if your shit touches, won't that be weird?
Dude #2 and 3: Maybe, but fuck it.
Dude #4: Ok, well I'll take the mouth, I guess that leaves you guys as the poles.
Dude #1 and 5: FUCK! Well there better be plenty of lube.
Practice of filling all 3 orifices of a female by either penis, or objects.
A penis in the ass, pussy and mouth at the same time, or a combination of penis and vibrator/dildo.
My wife likes to be made airtight by having my cock in her mouth, a plug in her ass, and a vibrator in her pussy.