Cum-swap Garside, also known as the cumswap challenge Is a competitive game of tag where one person ejaculates into their own mouth and then cum-swaps with someone else who consequently adds their own jizz into the mix.
All contestants from around the world must then work together to get the ever growing cum-glop around the entire earth by cum swapping.
Upon arrival at the beginning country, the first occupant of said country to receive the cum will finally swallow it and thereby conclude the game.

The event is named after Robert Garside (born 6 January 1967), calling himself The Runningman, is a British runner who was credited by Guinness World Records as the first person to run around the world.
Person 1: Hey we doing the cum-swap Garside next Saturday?
Person 2: yeah! Me and Stacy has been drinking fish smoothies all week to prepare for it!

Example 2
The annual cum-swap Garside begins on the 9th of February.
Contestants from all around the world will be required to be on standby and await their turn until the games has concluded.
by Flip-flop man January 13, 2021
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