Tired from getting his balls teased by grass Alec sits down for a moment. Carefully trying to sit down comfortably. Calming down a bit he hears something familiar.
Harpies!
At first Alec was in a bit of a panic he cant get away in time, but i's time for another body. You try to get attention, though Alec quickly stopped as he felt something land on his ball.
"What a troubled stallion" he heard
"But maybe we can lighten his troubles a bit lessen ours" a harpy that landed in front of him responded. The harpies try to roll Alec over to get the centaurs dick. Alec quickly grabs one of the harpies, a particularly busty one, knots the pouch on to her leg and switches body. This time he needs to learn how to fly away to not be suspicious.
Alec quickly makes a run, jumps and flaps his wings. miraculously he did it, though a bit shaky he flew away. The other harpies were to busy trying to contain a helplessly confused centaur with huge balls.
Alec flies around a bit, getting the hang of it, though quickly getting tired. He needs to land. How?! He tries, starts to fly lower, lands and trips and tumbles to a halt inside a forest near the city. He falls unconscious.
When he wakes he is tangled is some kind of vines. They seem to have enveloped his body. Worse he feels the vines inside his breasts. The moment he becomes aware of it he feels it move and pomp something inside them. immediately his breasts plump even more not much and he could not fly away. He claws himself free and franticly looks for direction away from these vines, even up the three the vines grew. He tries anyway to fly away. He takes a run and flies till he is just above the trees as feels dizzy and heavy. He keeps himself up there for a minute till he drops from the sky. His breasts had grown a bit bigger than his head and had become to heavy to fly with. He hits his head and again falls unconscious.
Alec wakes up surrounded a pods different creatures captured by the vines though again he could break free, but his breasts have made him already immobile.