how can you get your body stuck in something and not get back out the same way?

Question

Some examples:

A ring slides on but gets stuck trying to take it back off.

A kid puts his head through metal slats on a railing, but can’t pull it back through.

A girl gets her body in a clothes dryer, but can’t get back out.

If we can fit forward, shouldn’t we be able to fit backwards, too?

In: 358

Answer 1

Think of how a barb works on a fishing hook. Body parts aren’t perfectly equal and we’re kind of squishy but we also have bones. Makes for getting stuck pretty easy if spaces are tight.