Queef-cannon (NOUN): a vulgar, slang term for a nauseatingly filthy vagina.
Armando: You were pretty wasted last night...did you get lucky?
Jimbo: Nope...I projectile vomited after Cheryl whipped out her queef-cannon. Thankfully, I passed out shortly afterward.
When having insane sex on top of a civil war era cannon your partner screams FUCK ME HARDER resulting in you pulling out from fear, the resulting queef launches your partner 10 feet in the air pulling a confederate flag behind her showing the pride of this amazing country. (can only be performed in alabama)