Pakistani Echo-locator
One person is blindfolded and stuck in a room while others stand away from the wall. They take turns farting at the wall, and the blindfolded person has to find them all and stick their nose up their butts.
My friend played Pakistani Echo-locator and got stuck sniffing my mom's butt for 20 minutes.
The game got so intense, I had to pull my friend out of the room because he was sniffing the teacher's butt.
At the sleepover, we played Pakistani Echo-locator and ended up in a full-blown fart war.