a powerful sex move where you force your sexual partner to stop pissing for months, and then fuck them so hard they start pissing everywhere. This simulates the pollution of the Chinese rivers and falls.
why is Jessica holding in her piss? She's waiting for the grand falls of china.
Me and my girlfriend just had the grand falls of china, cleaning the room was annoying, but it felt amazing.
by Rocket sex November 14, 2020
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