"Bro, you look great in that speedo. Bet you'd like to go for a swim, and..." sniffing his armpit, Matt adds, "I could use a bath."
From his position in Matt's hand just inches from Matt's crotch, Cody can see the boy's boner stretching his denim. He's probably going to jock off in the tub, the plastic man toy thought.
Ten minutes later, Cody doll was propped up between a bar of soap and the tile wall as the tub filled with water. The naked giant Matt now with his erection free to demonstrate that it was taller than Cody climbed into the tub. He turned off the water then pulled Cody's arms over his head, and shoving the bar of soap, toppled Cody into an action figure dive into the tub. Matt laughed hysterically, then he concentrated on Cody being animated while still being an action figure. Cody started kicking his stiff legs as he started to swim. It was exhausting work, and soon Cody was forced to swim over to Matt's chest, where he climbed up on to Matt and assumed a beggar's position. He still couldn't speak as his mouth was merely a groove in his hard plastic face.
"Tell you what, Cody, I'll let you earn your height and humanity back. If you're interested?" Matt asked.
With difficulty, Cody indicated his assent. His plastic head was designed to rotate not go up and down.
"Okay, here's the deal. Your job is to jock me off. Everytime I cum, you will grow a quarter of an inch." Instantly, Cody was gesturing to make him bigger than that.
"If you're going to behave like that, you'll only grow an eighth of an inch. You wanna try for a sixteenth?" Immediately, Cody shook his head violently.
"Well, if you don't want that, you better get to work. That means if you make me cum 8 times you'll grow an inch. You're 6 inches tall now, and you used to be 72 inches I think. So let's see 72 minus 6 is 66, and multiply that by 8. So you need to make me cum 284 times to regain your former stature. Of course, there'll be a penalty too. If you fail to make me cum at least once a day,you'll shrink back to 6 inches and start again."
Cody threw himself at Matt's tree trunk sized cock and started pounding away.