I like the gang fight scene at about ten or 15 minutes into Stanley Kubrick's A Clockwork Orange with the lines straight from Anthony Burgess's novel and his invented language Nadsat that Alex and his droogs use. Not strictly swearing but certainly inventive invective. "Oh oh oh. Well, if it isn't fat stinking billygoat Billyboy in poison. How art thou, thou globby bottle of cheap stinking chip oil? Come and get one in the yarbles, if you have any yarbles, you eunuch jelly, thou."