oldsmoboat's law Share definition Flag This law states that when a thread title says "Funny" or implies that it will be, it won't be. The thread title said "Funny Video" but the funnay was not found. oldsmoboat's law by oldsmoboat June 27, 2005 0 0 Get merch Get the oldsmoboat's law mug. Buy Now — $32.95 See more merch