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A blindfolded person is stuck in the middle of a room while at least two others stand away from the wall, facing the opposite direction. They take turns letting out loud farts at the wall, and the person in the middle has to find them all and sniff their butts.
My cousin played Pakistani Echo-locator and ended up sniffing my uncle's butt for 10 minutes straight.
At the party, the game turned into a full-blown butt-sniffing war.
I had to play Pakistani Echo-locator with my brother, and I still can't stop laughing about it.