None. Horses are not known to use operating systems nor computers for that matter.
Because it's not "I is who I is" My brother is 35...
Hippopotamus keeper: I don't know he won't tell me.
Pounce...
He wanted to grow mashed potatoes.
The ground!
He had the knight off!
They both stop working properly when you open windows.
micro chips
That's easy," he said. "You're exhausted."
It doesn't matter (go ahead and down vote :P)
One with everything
A low-key person
The operating system