My step-sister and I are horrible at science. Now we have a project due in class and know we will get a crappy grade like all the other assignments we've tried unless we can turn in something extra special. We are way too hot to be continuously getting such crappy grades in college although I think my step-sister's idea for this new project will help us finally get an A. All we have to do is gather some sperm so we can look at it under a microscope and report everything we see. We can't ask our stepdad for a sample but we can get one from our sissy younger stepbrother. He is so submissive to anything we want him to do for us that this extraction for science will be a breeze.