Which of the following films contains the longest kiss in film history?

Explanation

Kiss (1963) is an experimental film directed by Andy Warhol, which runs 50 minutes and features various couples - man and woman, woman and woman, man and man - kissing for 3½ minutes each. The film contains the longest film kiss ever recorded. Kiss was followed by Eat (1963), Sleep (1963), and Blow Job (1964). This was one of the first films Warhol made at The Factory in New York City.