In Reality Bites, Winona Ryder and Ben Stiller are on their first date and she tells him that hte Big Gulp is “the most profound, important invention of my lifetime.” They hook up after that and the plot follows its trajectory of a twentysomething coming-of-age romantic comedy, but the line stands out as one of the many witty pop culture observations that are simultaneously the film’s greatest strength and biggest weakness. Okay, maybe I’m just using the word weakness just so show contrast, but I will say that there are moments in the movie where the catchphrases and allusions work and other timeswhere they wind up feeling ham-handed and forced. The Big Gulp line could have been the latter if in the hands of someone other than Winona Ryder, but she’s being silly and flirting in that moment, which makes Ben Stiller melt (and I admit, me too). Besides, we all know that there is no way, with all of the technological innovation we have achieved since the end of the Second World War, that the Big Gulp of all things could possibly be that important.

Or could it?

7-Eleven has kind of always innovated when it comes to the convenience store, and especially when it comes to drinks. For instance, they invented the coffee to go cup in 1964 (although the iconic Greek Diner coffee cup debuted around the same time, so I guess you can make a case for either being first). What became the Big Gulp debuted in 1976, as according to Smithsonian magazine, 7-Eleven came out with a 32-ounce drink that was circular on the bottom and had a square top “like a milk carton” (the magazine’s authors and editors could not find an image of it and sadly neither could I). The cup was created at the requrest of Coca-Cola, who was looking for a way to shift more product, since back in the 1970s, they were still selling their drink in glass bottles that went for 50 cents and included a “deposit,” meaning you’d get money back upon returning the bottle. 7-Eleven sold the 32 ounce up at the price of 39 cents and advertised no deposit, and it was an immediate hit. When the cup’s manufacturer could not continue to produce it for a little while because they were moving their manufacturing to Canada and had to take a hiatus in operation, Dennis Potts–who was in charge o fthe product at 7-Eleven–commissioned a new design and the Big Gulp as we know it came to be.