The line comes from Terminator 2: Judgment Day from 1991, where Arnold Schwarzenegger plays the reprogrammed T-800 protecting John Connor. John teaches the Terminator the Spanish farewell as slang, and the machine later repeats it, with baby added, just before defeating the liquid-metal T-1000. The moment became one of the film's most quoted scenes and spread through television repeats, trailers, parodies and online soundboards. It endures because the deadpan delivery turns a simple goodbye into a memorable sign-off for victories and exits.