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
I can explain the ring at least. When you slide it on, provided has any amount of snug fit, the blood vessels in your finger are compressed where the ring is but expands by extension on both sides (due to the displacement). This causes your finger to swell around it slightly which makes the ring unable to slide back off as easily. The tighter the ring, the more it swells and this harder to pull back off. When you wiggle it back and forth as you try and take it off you disrupt the compression dropping the swelling which allows the ring to slide off again.
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