"How bout we make more Ty's? It's going to be fun!" said one of the Ty's.
All of the Ty's agreed, so they try to reach out for each other's dicks, and started jerking off. They pumped in unison and moaned together at the same time. As their seed landed on each other, they started to grow more cocks, more arms, more legs, more heads, until the room is completely occupied with the blob of Ty.
Some of the seed landed on the ceiling, walls, and the floor. The cum turned into normal-sized naked Ty's, with one head, two arms, two legs, one cock, but there's a lot of them in the room, perhaps 15 of them.
All of the sudden, the Ty's heard a doorbell sound. One of the Ty's managed to exit from the room to open the door. It was his friend, Dustin.
The regular Ty accidentally spewed pre-cum onto Dustin, and all of the sudden, Dustin turned into Ty...
The 'pre-Dustin' Ty was stunned, "Whoa! So... I turned into you?"
The regulat Ty said, "Hey, I got something to show you..." and they both walked to the room with the blob of Ty's.