I woke up to a strange flavor in my mouth; my tongue felt heavy and swollen. I rolled over, trying to run it over my dry lips and wondering if I still had a glass of water nearby when I felt it swing over and land on my face. It was warm, hard, and throbbing with my quickening heartbeat. I gasped when I recognized the shape of it, magnified to my eyes at it draped across my face. I abruptly sat up, my “tongue” flopping forward uncomfortably and drooping out of my mouth. I would have screamed, if I could have. Almost going cross-eyes, I stared down at the hard cock protruding from between my lips, bobbing slightly in the air. The circumcised head was flared and full; it looked exactly like what my cock had looked like between my legs when i went to bed last night, only now, it was my tongue!
I reached a shaking hand up to my cock-tongue, groaning as I gingerly probed the head. I wrapped my hand around it and gave it a few strokes. It felt exactly the same, although I couldn’t taste my hand, or the saliva my mouth was generously producing to lubricate my cock-tongue. I could feel a strange weight in my throat, like I’d swallowed something that got stuck. I felt around under my chin, shocking myself when I felt two round lumps in the blank space of my lower jaw. Were those my balls? I wondered. I was both freaked out and curiously aroused by this bizarre change in my anatomy. It was still hard and sticking out from my mouth; I could feel the demand, the ache in my balls, realizing this was my morning wood. With a tentative hand I reached out and stroked my cock, using my saliva as lube. I leaned back against the bed and moaned as I stroked my tongue; it all felt so new and bizarre that I couldn’t hold it in any longer. My orgasm hit my head like a powerful high; I could feel my balls in my throat churning out cum through my tongue, firing into the air with abandon. I rolled over and wiped my softening cock-tongue on the pillow, shivering at the sensitivity. As it shrank an softened, I flexed my jaw, finding that I was able to fit it all the way back in my mouth once it was flaccid. As a soft penis, it rested in my lower jaw like a normal tongue would.
I cleared my throat. “Hello,” he said aloud; it was a weird sensation, feeling my penis move in my mouth to form words. “Fuck, thassh weird,” I laughed, rubbing my jaw. Then a thought occurred to me. If my morning wood was in my mouth, then what was between my legs? I pulled back the covers; I would have cried out in shock if I didn’t already know where my cock was. There was nothing on my groin except for my usual nest of pubic hair, and a small, pink, protuberance where my penis used to be. A full sensation in my bladder quickly informed me that something clearly still happened down there. At least I didn’t piss through my mouth too, I thought as I tried to forget about the salt taste in my mouth. Wait, taste! I realized I could taste again, only now the sense seemed to be limited to the head of my cock-tongue.
I reached for my phone and opened up my news app, but everything seemed normal. Same celebrities, same politics, no breaking news about people’s tongues turning into cocks. He went to Shreddit instead and poked around the NSFW forums instead, selecting a random video. In it, a man and a woman were in the middle of sex. Only the man wasn’t thrusting into the woman with his hips; his head was between the woman’s legs, bobbing away. As he pulled his head back I saw several inches of thick cock-tongue withdraw from inside her before he slammed it back in. My jaw dropped, my cock tongue hanging out as I realized that it wasn’t just me, but everything about my world that had changed. A cursory search on the anatomy pages only confirmed it: mammalian tongues and mouths evolved to become the genitals. Thus, in human men the tongue functioned as a penis, and the tonsils were replaced by the testicles. Human women, however, were almost completely the same except that they had powerful pleasure receptors located in the mouth and throat now. I jumped when my bedroom door opened unexpectedly.
“You gonna shtay up here all day,” his dad began as he burst through the door, “Or are you coming for breakfasht?” he asked. I gaped as I watched my father’s cock-tongue flail in his mouth as he spoke. “And close your mouth; no one wants to see your cock hanging out.” He said, before shutting the door.