In the commercial, he's drinking a Pepsi and waiting for his date to get ready. One of those circular vacuum/Roomba things comes whizzing by and tries to steal Dave's Pepsi. He trades witty barbs with the Roomba, and eventually it vacuums up his pants. His date comes out and looks at him like "nigga I KNOW you ain't standing in mah house in yo' boxers". Dave says something like "It couldn't be helped" and finishes his Pepsi.
Good times, man. Good times.