Slangy Movies refers to films that use informal language and often feature unconventional characters. The two crossword solutions, FLIX and PIX, are both abbreviations for slangy movies. FLIX is an abbreviation for 'film flicks, ' which is a term used to describe low-budget, independent films. PIX is an abbreviation for 'picture shows, ' which is another term used to describe films that are often considered to be of lower quality than mainstream films.