What could this dream possibly mean?

Ok, so the other night, i dreamt i was interrogating a light bulb. i said that i knew he electrified someone, and that we have evidence to prove it, but he kept denying it. then i pulled out this tiny piece of gl in a plastic bag from my pocket, and said that it was in the victims skin, and that the DNA in it matched the light bulbs. then i saw that the light bulb was missing a piece that exactly matched the piece i had, then he just looked worried, and then i woke up. I was just wondering if this dream could have any logical meaning to it. so, anyone got any ideas? besides the fact that ive got some problems, cause why bother telling someone something they already know right?