None. You have to replace the whole motherboard.
or
Only one, but it takes six visits.
or
The chicken wasn't around yet.
or
Because there's no one else to wag it for him.
or
Your wife comes back to you, your dog returns to life and you get out of prison.
or
Finding a cabinet position for the thing on his head!
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So he has nothing to chauffeur it !
or
Steal its chair.
or
There are skid marks in front of the skunk.
or