Long twin pregnancy

Lisa • Mom of 4 boys and one baby girl. Mom of a high-school graduate, preschooler in heaven, 3 year old twins and a 1 year old princess.
I think twin pregnancy should be 1/2 as long as a single pregnancy don't you? I mean we are making twice as many humans right? And triplets can go for a third of the 40 weeks and so on. Who's with me? I'm just joking, I will carry my boys as long as I need to....I'm just so tired and sore. 😝