(I may or may not have snuck into the adjacent dining room to work on a painting project while this was taking place.)
I thought that all of the hysterical laughing was related to the fart noises the finger-paint bottles were making, but realized that I needed to intervene when I figured out that they were shrieking things like “look at my face!” … “look at my back!” … “look at my tummy!” etc. I sprinted into the room, but not before “look at the chair!” and “look at the bench!” and “look at the table!” UGH.