Hi-C Ecto Cooler, a promo item for the short-lived animated series, was a slime-green juice far from what today's kids think of when they hear "green juice."

Source: https://www.buzzfeed.com/angelaandaloro/discontinued-foods-from-gen-x-millenial-childhoods-that

It certainly looks like Farley might have a heart attack while watching the scene, as his eyes bulge out and his face turns the color of Hi-C Fruit Punch.

Source: https://www.slashfilm.com/1159546/a-ridiculous-amount-of-espresso-helped-chris-farley-prepare-for-his-hilarious-billy-madison-scene/

Tiffany Haddish, who plays Hi-C, adopted one named Catatonic.

Source: https://www.buzzfeed.com/kristenharris1/celebs-pets-in-movies-tv