LEGO heads
LEGO blocks are one of man’s favorite toys, from age 0 to 99. The police will come if you’re a centenarian still playing with these rigid, colorful blocks. However, have you noticed that the heads of all LEGO men are hollow? This isn’t so that LEGO can save money on plastic, though that’s probably one major upside of its design.
The real reason why LEGO men are brainless is so that if swallowed, the LEGO eater can still breathe. Being hollow from top to bottom allows air to pass freely. If your child just can’t get enough of eating LEGO men, you can rest assured that they’ll still be able to breathe while doing so.