Not yet officially an adult, yet feel most of the pressures of being one. Either you're applying for college or you're in college, have serious relationships, have a job, etc. You begin to transition from a defenseless child to one of society's bitches.

Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.

The right age to start having sex, according to Chef on South Park

When you have more responsibility than at 16, but without all the fun of 18.

It is simply the best age on earth. You have the responsibilty of an adult without having to, you can drive and get a job. However you still have joys of a child, such as still being able to live with your parents without guilt.

Refers to the act of masturbation. Comes from the rice purity test, as question #17 is about masturbation.

a prime number that comes before 18 and after 16