Go to a public indoor swimming pool of your choice and redress into your swimwear as usual. While you are in a pool, undress your bottom swimwear and let it sink to the ground. Choose easy, medium or hard difficulty for your way of retrieving it back.

Easy: Retrieve it by diving down, pushing your legs and butt out of the water. [10 NIP-Points]

Medium: Pull yourself out of the water, sit on the edge and count until 100. You can make the impression as if you were looking for something in the water before letting yourself drop back in and dive for the swimwear by pushing your leg and butt out of the water. [20 NIP-Points]

Hard: Pull yourself out of the water and climb a diving board of your choice. Jump from it back into the pool and dive for your swimwear in one motion. [30 NIP-Points]

After you come back up dress it however you like.