Well it depends on your talent. You said original and funny, so practice until your audition with your partner and maybe you'll get the part. Invite some of your other friends to pretend to be audiences and grade you on your stance. Such as how funny your jokes are, how long you talk, try to keep it under fifteen minutes, try to jester your hands somewhat and make sure your friend is comfortable with being on stage as well. Trying to come up with original jokes usually means avoiding whats going on with everything else in the world. So go hang out with your friend, forget about everything else, and when something comes up that is funny that you guys joke about, think about it more, write it down. "Original".