Some details that would be included in the script (if there were one) would be personaility.  Personalitiy would be in my script because Fred has plenty of personaliity and energy.   Another thing it might say is be dramatic and move around. Add a girly voice and be nerdy to fit his character. Rock back and forth and stutter to match the characters personality, also talk very fast. Honestly, I don't think there was a script to this because Fred just say what comes to his mind.  The only character in this video is Fred, and Fred is a witch for Halloween.  Fred is suppose to be autistic or just plain crazy.  Another thing I forgot to include is, the clock, PlayStation, and the camera the Fred was not suppose to play with. Another detail is when Fred's mom came home drunk.  Fred was the mom, actor, and Fred.  When Fred transformed into his mom, he had a deeper voice, and he was an alcoholic.  His costume also changed, when he was Fred, he had on a witch hat, when he was the mom, he had a a pillow in his shirt, (I guess he was trying to be fat).  This film also takes place in his house, just to show that he is home for Halloween, instead of out trick or treating.  Another thing that could possibly be emphasized in the script is, his anger problems. Some other things may be the unicorn and the image of himself popping up behind him, kind of like a ghost.  This is a true short clip comedy.

Here's another funny clip