(N.) The ability to get every single person within earshot to sing along to a particular song whenever said song is heard, sung, or hummed. Derived from the Elton John song "Tiny Dancer." Other famous examples include "Bohemian Rhapsody," "Carry On, My Wayward Son," and the Super Mario Bros theme song.
The Tiny Dancer effect is put to use:
Serial killer: Any last words?
*Tiny Dancer starts playing*
Serial killer and victim: Blue jean baby/L.A. lady...