There's a condom behind that bookshelf Share definition Flag Joke about children's attitude towards sex and lack of practical knowledge or reading skills. Kid A: There's a condom behind that bookshelf. Kid B: What's a bookshelf? There's a condom behind that bookshelf by Kung-Fu Jesus May 2, 2004 0 0 Get merch Get the There's a condom behind that bookshelf mug. Buy Now — $32.95 See more merch