Located in SouthEast Idaho, there is a small town called Shelley. This town is known mostly for being full of super oppressive Mormons that secretly all have sex with each other and pretend they're perfect in public. But, from the oppression came passion among those that refused to be held down any more. Queef Heaving was born! After the first annual competition, even the goody-goodies decided to join in!
To Heave a Queef, you take a potato and lodge it into your vagina. Forcing a glorious queef, you send the potato flying! Furthest potato wins.
Because, as I mentioned earlier, a lot of people in Shelley are super sexually deviant when they think nobody is watching, the Mormon women don't usually do very well. Their sloppy cooches can't properly form the seal around the potatoes required for true power. But it doesn't stop them from trying!
Boys play this game, not with their anuses. But with special, custom prosthetic vaginas that they wear over their penises.
If you think I'm making this up, try googling it. Seriously.
"Hey Brianna, are you going to be entering the Queef Heaving competition this year?"
"Of course, Lana. It's my favorite day of the year!"