 Homer and Bart continue to give Lisa a hard time at home , particularly since Homer is preparing to host a barbecue , complete with roast pig . Bart and Homer even form a conga line and sing , " You don 't win friends with salad ! " On the day of the barbecue , Lisa makes gazpacho for all the guests as an alternative to meat , but the partygoers laugh in her face . Enraged and deeply hurt , she climbs aboard a riding mower and drives away with the roast pig in tow . Homer and Bart chase her , but she pushes the pig off a slope and they are too late . The pig rolls through bushes , into a river , and is shot into the air by a dam spillway 's suction . 
