Swimming!

You decide to ignore the risks and go swimming. After all, the bikini you packed has enough ruffles to conceal anything, as long as you don't get a hard-on.

A few minutes later, you're in the pool with Amy, and a few other girls, in the middle of a friendly game of water polo. After a while, you start to realize that it's been a really long time since you got the chance to just unwind. The sight of the other girls in their swimsuits, jumping around, with some interesting bits jiggling, is making quite a tent in your bottom. You keep running your hands through the water around you, hoping the water will hide your dick, but it just keeps getting harder. Every time you look up, towards the game, you see Amy jumping out of the water, giving you a look at her bottom, or leaning back to catch the ball, pushing her breasts against her twisted bandeau top. All you can imagine is running your hands down her body, pressing yourself against her, sliding your cock into her...