Possible Clues:

• Shibboleth
• Translation of Latin e.g. that's funny
• Slogan putting student in stew
• Movie slogan
• "The Breakfast of Champions," e.g
• Movie poster slogan
• “Reality is a thing of the past” for “The Matrix,” e.g
• 'She walked off the street, into his life and stole his heart,' for 'Pretty Woman'
• Quotable bit on a movie poster
• "Just do it" for Nike