Years ago, many Italians had what is referred to as a "football wedding". It would be held in a hall or a backyard and they would serve sandwiches. The sandwiches would be thrown to the guests (thus "football"). Eventually, these weddings were considered crude, for a lower class of people, and went out of style. I would guess that Paulie calls the guy a stupid jerk and looks annoyed because the guy is acting like this a football wedding rather than an elegant affair at Don Vito's house.