*you do this while entering the human contest, so my advice for that is included here*
Have Laverne go to the Chron O' John and have Bernard give her the Fake Barf and the Fork. Also, have Hoagie give Laverne the Spaghetti which will become the Wet Soggy Noodles. Now have Laverne go into the big door and talk to the Blue Tentacle to get the Name Tags. Head upstairs to the second room with the Mummy. Get the Extension cord next to the Pink Flamingo. Get the Roller Skates on the table and then use them with the Mummy. The Mummy will be with the other contestants so put a Name Tag on him and he'll be your human for the contest.
Go up to where the contestants are and use the Fake Barf on Harold to get him disqualified