"I was drying my son off after his bath and tried to catch him on camera playing peek-a-boo with his towel," Stone writes on YouTube. "Instead, he pooped on my leg."
Possibly the best thing about this candid moment is little Jax's reaction. While Stone is mildly surprised, Jax seems to think that the whole thing is simply hilarious.
CBS News' Will Goodman writes that the whole thing is an "awkward mix of adorable, endearing and icky all at once," but after watching the video on loop, we're going to have to agree with Jax.