The cat in the bag
This looks like an odd picture, but let us draw it out for you. After a kid was done playing with her blocks, she promptly left the room, only to receive a thorough telling-off from her dad. He wanted her to pick up after herself, as does any parent wants from their children. However, it’s not that she didn’t want to but rather, she couldn’t.
Do you see that cat in the plastic bag? Yeah, that’s where her blocks were supposed to go. And if Archimedes’ principle holds true, you can’t put blocks in a space that’s currently occupied by a feline. When dad went to go investigate, he had to snap of picture of how his daughter shut him up.