First don't collect normal dude or it won't work. Collect a wrench from the gas station and break the normal dudes' toilet. Then go to the store and steal 5 cans of beans at night (wait 15 minutes for nighttime). Then feed the cans of beans to normal dude and wait 5 minutes for him to finish eating. Wait 30 minutes for him to start turning green in the face. He will run to the restroom and take a dookie but he won't be able to flush because you broke the toilet. Finally, go to the restroom and collect Dookie Dude!!!!!!!!! :)