Mom of the year

It’s totally possible that the kid knocked into the glass and essentially spilled it on himself.

That's exactly what happened I bet. He flung his head into her lap right when they were posing for this lovely photo and hit the bottom of her glass. Now it'll be all over the both of them not to mention she was really looking forward to that drink. Ohhh being a mom...

Yeah ya can see the bottom of the glass touching his head. So like everybody else said I’m goin with him hitting the glass with his head spilling it.