At what age is a human male brain fully developed?

  • 25 correct

    It takes a quarter of century for the male brain to fully develop so lay off your son a bit for forgetting to take out the trash. A female's brain is fully developed by the age of 21 which means that it will take a full four years for him to fully understand what the heck you're talking about.

  • 21
  • 18
  • 16
  • ON A DAY
    LIKE TODAY
    04/29
  • Fact of the day

    American's are responsible for 1/5th of the world's garbage.
  • This day in 1852

    The first edition of Peter Roget's Thesaurus is published
  • FAMOUS BIRTHDAYS

    • William Randolph Hearst

      San Francisco, California
    • Willie Nelson

      84 years old | Abbott, Texas
    • Jerry Seinfeld

      63 years old | Brooklyn, New York
    • Uma Therman

      47 years old | Boston, Massachusetts