What do children and lights have in common? They both hang from ceilings!
Not funny, here’s another.
Why can’t China play baseball? They ate the bat.
Hanging Children and Eaten Bats
Explanation
The first joke plays on the morbid image of kids hanging like lights. The second one is a pun using "bat" as both a baseball bat and an animal, using the stereotype of Chinese people eating everything. It's a classic dark humor set up with a pun at the end.