The lump from you pants is steadily growing. He frown and touch it again, pinching it lightly and then pulling on it. It hurts when you tug on it. It gets longer with each second that passes so it begins to looked like you have a long fleshy tail.
Confused and distraught you move to the bathroom, taking your pants and boxers completely off to stare at still growing appendage. It continues to grow till it is longer than you legs even. You try to move it and find that you can! The new appendage moves side to side as you flex it. It seems to have stopped growing at a length of 5 feet.
"This can't be real..." you mumble as you stare at the fleshy tail behind you.
Just when you thought the transformation was done it starts again. The tail gains mass, growing wider and absorbing you backside, making you stand with your back nearly parallel to he ground, that is, if you want to to keep standing.
You run a hand down your back side which has transformed into the growing tail, your ass is rapidly losing definition as the tail grows wider and wider till it's almost as wide as your chest, tapering down into a graceful point. You frown and manage to hobble to the bedroom and lay down on the bed, your new tail dragging uselessly behind you. The tail begins to grow again as you mange to get onto the bed, a fluke growing out from the tip, reminiscent of a dolphin. Your tail is seamlessly connected to your waist bow and your legs stick out awkwardly, they slowly shift down and begin shrinking up into the tail you just grew. Your toes are merging together and your feet are changing shape to become more fin like as the pull up against your body till finally you just have two small fins.
Miraculously, your penis and your balls have survived the transformation thus far and awkwardly stick out of a small dip in the tail that used to be your crotch. The transformation seems to stop for a moment before starting again, small bumps appear on the skin of you new tail before a plethora of scales burst to the surface. The dip grows and your genitals shift to better fit while a layer of scale covered skin hides them. You ran a hand over your smooth tail and feel where your penis had suddenly decided to hide. The scales continue up your wait a ways before tapering off.
You stare at your hands as a webbing begins to grow between your fingers. Your skin takes on a different texture, similar to a dolphins skin, but is only noticeable when you feel it.
A sudden pain takes your breath away when you feel new gills opening up around your lungs and moving to try and breathe despite not being in water. You blink, a second pair of eye lids blinks with you as he stare at your transformed body.
"Wh-What happend to me?"