None. You have to replace the whole motherboard.
or
It gave a little wine
or
Half a worm.
or
The vacuum cleaner has the dirt bag on the inside.
or
A sunburnt zebra.
or
Only one, but the bulb has got to really WANT to change.
or
To get a mini soda
or
Drinking, bathing, washing, swimming, etc.
or
They both come in tots.
or