Down

You squirm down the shaft and find a tube leading down. You work your way through, it is very tight but very stretchy, probably due to the elixir your mother drank. You heard some moaning from your mother as the walls of this tube squeezed around you. You squeeze down into a more open area. Unknown to you, the elixirs in your mother's system had shrunk you down more and you were deposited into the epididymis (the tube where sperm is collected the just outside of the testicles. You were now sat with your knees up in a pool of semen, that was wiggling around you.

"Ewww, eww, eww!" You gagged with disgust.

You heard your mother's voice talking to you through her own body. "Ok, I don't know what will happen inside there." Your mother explained with a tone of excitement. She was thinking of all the data she could get from this.