Both should be changed regularly, and both for the same reason.
None. Once the bulb goes out, they replace the house.
A brunch.
When they get a hole-in-one they write down *zero* on the scorecard.
logic
Ask Hugh Hefner.
They both need to be changed after a while for the same reason
You have only one second to guess the answer. No pressure.
Just another reason to teach your cat to read.
