I_should_have_known -

: Questions range from the location of UCLA to keyboard shortcuts for saving documents. 2. Music: Notable Songs

Several famous tracks use this phrasing or a close variation: How To Play ...I Should Have Known That! i_should_have_known

This is a popular fast-paced trivia game where players are asked questions about things they ideally should know the answers to (e.g., "Which way does a fan turn?"). : Questions range from the location of UCLA