The first time I unloaded, I was taking out the first kid and my fiance was taking out the third...and the stroller tipped backwards....luckily he had quick reflexes!

My kids are all pretty similar in weight (the little ones are probably heavier than the older kids lol) and I have two little ones that don't always stay where I need them. So I put them in first and than out last....helps with the supervision of them!