It was a Sunday afternoon and I was just chilling in my room when all at once I felt a sharp pain in my crotch. I ran to the bathroom a pulled my pants down and to my shock my cock had begun to grow! The pain slowly faded into pleasure as the swelling felt to good my balls twitched and I could feel them almost expanding also the pleasure was driving me insane and I couldn’t resist any longer.
I grabbed my shaft and pumped frantically this isn’t the first I’ve jerked off but this time it felt to good and I couldn’t stopped then the feeling of cumming slowly began to overwhelm me my body stiffened as my cock exploded all over the floor.
After two minutes of moaning and panting I came to my senses and cleaned up and went back to my room looking back on it now I have the feeling those urges will come back.
Source: reddit.com/r/eroticliterature/comments/r4p2nq/growth_spurt