Give yourself a better tongue

You consider for a moment. Longer? Thicker? What did your predecessors choose? Sifting through your collective memories, you find the perfect solution. Closing your eyes, you focus on the muscle structure of your tongue, using the precious energy that you have collected to enhance your oral muscle, changing it from an ordinary tongue into something that closer resembles an octopus's arm, just without the suckers.

Looking over at Harold, you open your mouth and let your new tongue slither out. Harold jumps, looking startled as you stretch your tongue out nearly a foot, then change the texture of the flesh, making it knobby. You make it twist and undulate -- you could literally tie a knot in your tongue, it's that long and flexible.

"'at oo oo 'hink?" you ask, and discover that your fancy new equipment isn't much good for talking. Luckily for you, now that the energy has been used to make the change, you can switch back and forth between you new and old tongues without using more energy. You can talk later, though. Right now, a juicy ass is begging you to fuck it with your new tongue.

"What the fuck is that?" the hiker shouts, his whole body tensing as you slide your tongue inside. You tease him with long, slow thrusts of your magnificent new muscle, and he moans helplessly, trembling as you sink your tongue deeper. You can reach his prostate now, and his moans turn to needy keening as you lick and lap at the spongy lump of nerves.

"Stop...please, stop..." he begs, but he raises his ass, encouraging you to keep going.