Throughout Back to the Future 2 and 3, Marty McFly hates being called "chicken, but why wasn’t this plot point included in the first film?

Marty McFly grabbed a guitar in “Back to the Future” and rocked out with the band at a 1950s high school dance, helping him narrowly avoid blinking out of existence before time-traveling back to the 1980s.

Four decades after the blockbuster film debuted, the guitar’s creator has launched a search for the iconic Cherry Red Gibson ES-345.