Gorilla Logic
Gorilla Logic is the half-witted way of figuring out a problem, asking a question or giving someone an explanation that makes absolutely no sense at all.
When someone comes downstairs and asks you "Do you have a vanilla envelope that I can borrow?"..(he really means manilla envelope).Or, if your roommate takes lightbulbs from your room when he runs out because "you make more money that I do"... This is Gorilla Logic.