1. from the horse's mouth, from the original or a trustworthy source. 2. hold one's horses, Informal. to be patient. 3. look a gift horse in the mouth, to be critical of a gift.
How old do you have to be on Facebook? According to Facebook's policies, you have to be at least 13 to have an account. If you lie about your age, your account will be shut down if you get caught, so it is best to â¦ adhere to the policies and wait until you are the age that is required.
The most prominent owner of Facebook, Mark Zuckerberg (24% of the company), was born on May 14, 1984. This makes him 26 years old as of July 2010.