A 28 year old at-home Mom that still laughs at fart jokes

I checked on my baby daughter during her nap to discover that her diaper had leaked out the side a little (it was very warm so she was only wearing a diaper), and she was completely absorbed in playing with it. When she heard me in the door, she looked up and gave me a literal shit-eating grin, complete with a little dollop on her chin. I promptly freaked out, cleaned her up and googled 'baby ate poop' to see how worried I should actually be. I came for advice, and stayed for the laughs!