PILs visiting for the day. FIL brings his laptop and leaves it lying around, on the sofa, on the floor, on the coffee table next to drinks. We have a toddler. DH warns him that he needs to put it out of reach. (DS won’t touch it if told not to, but tripped over it on the floor.)
The inevitable happened and DS spilled his cup of milk on it. He was only trying to put his cup on the coffee table as he always does. FIL shouted a lot 
This is not our fault is it?