Genitals mostly involved as point of joke

• "In space no one can hear you scream," for "Alien"
• Trailer phrase
• Entertainer's signature
• Something funny in setting of gelatin
• Movie poster words
• "She walked off the street, into his life and stole his heart," for "Pretty Woman"
• Catchword; slogan
• "One man's struggle to take it easy," for "Ferris Bueller"

Wikipedia Word definitions in Wikipedia
In entertainment , a tagline (alternatively spelled tag line ) is a short text which serves to clarify a thought for, or is designed with a form of, dramatic effect . Many tagline slogans are reiterated phrases associated with an individual , social group ...