Stalling Tactics

My 6 year old has quite suddenly decided that he is scared of the dark. I may sound like an insensitive mother, but I don't think he's really scared. First of all, he has a nightlight and the hallway light shining right into his room, so there isn't any dark to be afraid of. Now he wants us to go in there and talk to him at length about his fears. When we've convinced him(at least for the night) that there isn't anything to be afraid of in his room, he moves onto monsters under his bed. Last week when Greg was out of town, Jacob called me into his room to tell me that he was afraid that there were monsters under his bed. I told him there couldn't possibly be in monsters under his bed because there is so much stuff under there they wouldn't fit. To which he responded, "What if they are just little monsters?" I told him that if that's the case he could just stomp on them. He got his "I have an idea" look on his face, and said, "What if there was a coelyphysis (sp?)under my bed, then he could eat all the monsters." For those that don't have a dinosaur obsessed child, a coelyphysis is a carnivorous dinosaur, you'd have to ask Jacob for more details about it though. I told him that that was a great idea. He could pretend that a coelyphysis that could eat all the pretend monsters (because Jacob knows deep down that monsters are pretend). He screwed up his face and told me that that wasn't going to work because the coelyphysis lived in Asia and not North America. I threw up my hands in exasperation, turned on the lamp, and walked out. No more stalling tactics. just go to sleep!