The line comes from Space Jam, the 1996 live action and animated film starring basketball star Michael Jordan alongside the Looney Tunes characters. In the film Jordan is pulled into a cartoon world to help the characters win a high stakes basketball game against alien opponents. Short dialogue clips from the movie have circulated online for years as reaction sounds, and this one survived because the wording is simple and reusable. Fans use it for real life moments that feel just as absurd as the situation Jordan reacts to on screen.