Well if you wan't to write a humorous narrative the first step is to do your research find out a little bit on a professional's point of view. After you know a little more than what you did than you start making a draft and brain storming ideas on topics that can relate from one to another, for example I can't start talking about cats than start talking about the sky maybe the cat jumped into the sky. Then have some close friends maybe help you and have more hands to ship in, and film Audio and Visual. After that simply go over it and perfect it until you have the perfect take. Lastly take those perfect takes(see what I did there) and edit them in any way possible, add effects and transitions and donzo.
After all this crazy talk i know your wondering well what the heck does your monologue mean well my friend let me tell you. I used many things I love and have personally occurred like throwing that chicken nugget that happened and checking the lunch menu is also a daily thing I do. The reason i chose these jokes first off i wanted them to connect some how like when I said pigs are intelligent but chickens for instance that's how I did it. Thirdly I had to time it correctly un fortunately I am five seconds off right now but the online stopwatch is a great tool for timing with many different clocks. Lastly I used google drive to store this work and had it printed as my script while the director films me talking.