Looking down you watch as you glide over the shore of the island and over the channel of water.
You suddenly feel a tingle and then orgasmic pleasure as the value shoots off your cock as you start to cum helium. You watch as your rubber nose turns back to skin, as your body shrinks and you start to loose height.
Down below Alex yells "HAWWW, I think we are turning back some now that we aren't over the island!"
You are only about 1/2 way to the mainland when the can starts to drag along the water. Alex detaches the can from you and jumps out, swimming, watching you as your balloon body slowly gains more weight. Your mouth pops open, you bray in fear as your complete donkey body begins to swim successfully toward the shore.
10 minutes later you and your friend plop onto the beach, out of breathe. From what you can tell you are a complete donkey, Alex reverted back most of the way aside from being a little hairy for his age, and a few other barely noticeable things.
What to do now you think...