"Fuller, go easy on the Pepsi!"
Pepsi is a brand of carbonated beverage with product placement in Home Alone. It was featured in the scene where the McCallister family is eating pizza. In the original home video release of Home Alone, a commercial for Pepsi is featured on the tape.
However, at the beginning of Home Alone 2: Lost in New York, Coca-Cola is the main carbonated beverage as seen when Uncle Frank steals Fuller's can and says "Easy on the fluids pal, the rubber sheets are packed!"