You return to the science lab and are in luck, the bottle your changes come form has a partner, it's black in color and you can only wonder what changes this will bring.
You know you don't want to be the guinea pig for it, so you bag it and head out of the school. As you rush out you realize that you have taken to the boots now, walking in them as if were a pro.
20 minutes later you find yourself outside of your best friends house. You know his parents are out for the night, you two had made plans to watch a few horror movies tonight.
You ring his door bell and after a few seconds he answers it. He has on only his pants, his skinny pale torso still wet from the shower. he looks at you and his jaw drops.
"Hey there stud." you say in your sexy new voice.
"Hey" is all he can get out as you see his cock standing at attention. You smile and reach in, grabbing it with your hands, you don't want to let go as you push him inside, slamming the door behind you. You see his eyes roll back in his head as you feel his cock releasing it's warm cum.
You let him in on your secret as he sits there, willing to let you do anything to him.
He hears your words but pays no attention to them as you remove the bottle of black goop from its bag.
"Lets see what this does." you tell him as you lick you plump lusious lips. You open the bottle and poor some on his lap. Within seconds his body begins to change.
You notice the bulge in his pants getting bigger as his ass quickly firms up and becomes bigger, more bubble like. His legs soon grow more muscular as well as his pants just about rip. But they don't, instead they turn black and shiney, becoming leather and tight. So tight in fact that they appear as almost a second skin.
"You like that?" you ask him as he lays there, enjoying the pain. Quickly boots form on his feet, the come up past his ankles and straps form around the top. You know you have a winner and can't wait to see what else happens.
You grab the bottle and begin to pour the goop onto his chest...