Yes it might a bit crude and maybe a tad juvenile, but it is great fun and very funny.
It's simple, you get two team and all you need to do is drop your plop! It's that easy. The challenge is to waddle over to your target with the 'Plop' between your legs and drop as close the the target as you can.
This does sound easy but you're under pressure and have to do before the other team. It's more difficult than it sounds and 100 times funnier than it looks.
In every set you get some targets and also two plops to play with.