Never grow up.

Chimpanzees have the longest childhoods (apart from humans), staying with their mothers for up to 7 years. These days human children have been taking longer and longer to leave home -- with more than 50% of adults under 24 still living with mom and dad. In 2006, the phenomenon was so big that it became the premise for a Hollywood movie called "Failure to Launch."
Photo: Getty Images
May 2nd 2008 @ 2:54PM