Fleshlight tag is a great game to play. You only need a few things.
1) A fleshlight
They also have avatar themed fleshlights.
Or you can make your own
2) A penis
Once you and a group of guys have your fleshlights, it's time to play!
The object of the game is to run around in a public place while pleasuring yourself with a fleshlight, and "tag" as many persons, objects, walls, cars, grocery carts, and any objects you deem fit. Once you're done tagging take a picture of said shot. Who ever has the most after a 24 hour period wins!
Happy Trails ;)