IKEA, the producer of everyone’s favorite DIY plywood furniture, is pretty sure you’re going to conceive your next child on a piece of their furniture. Not only that, but there are high odds your parents produced you by having sex on anything from the store’s classic Hillsdale Springfield Bed in a Box to its Ireviken kitchen sink. The company has released print ads in Germany, where they began selling products in the 1940s, that put a new spin on the traditional family tree. The item used to conceive holds a spot right between parents and their children. You’ll notice that as the generations progress closer to today, the furniture that started it all gets kinkier and kinkier.