Well, there were a lot of other things that I had to get besides diapers and I was in such a rush to get back home because I thought it was rude to just spring this up on my in-law's that I completely forgot to buy diapers until I unlocked the front door.
I was way too embarrassed to say that, so I quickly dug through the bags as though I was searching for them and then told a little white lie about how I must have forgotten them at the store (oh no!) to make myself look a little better.
I felt like I couldn't get back to the store and home fast enough. I felt like a moron and have never told anyone, including my husband, how scatter-brained I went that day.