Non-Trivial is sometimes used by engineers / scientist to (jokingly?) describe the extremely difficult problems that they are faced with.

Feeding bad information or faulty logic to the opposing team when playing Trivial Pursuit in an effort to steer the team toward the wrong answer. Especially effective when done under the guise of lending a helpful hand.

A wicked board game of question and answer. Now comes in 1st edition and Twentieth Century Edition

When playing trivial pursuit, if you answer a pie piece question right, you do a line of cocaine.

The long ass game that nobody knows the answers to, yet everyone plays during the holidays.

A veiled invitation for sex.

Originally a game, but now describes a lifestyle of frivolous attempts to accomplish or attain. In most cases not a conscience act by the participant. Most Americans practice this in one way, shape or form.