"Some Like It Hot" (1959 film) directed by Billy Wilder, starring Marilyn Monroe, Tony Curtis, and Jack Lemon
Plot: Tony and Jack are two musicians in 1920's Chicago who accidently witness a gangland murder, and must flee since the gangsters now want to kill them. They know about an all-women's band that is about to leave town, disguise themselves as women, and manage to get jobs with the band. They leave on an overnight train as the gangsters look for them in vain back in Chicago. Marilyn is a singer with the band, and she and all the women of the band are fooled, and treat Jack and Tony as women.
Scene: On the sleeping car of the train, the women have decided to have a party instead of sleeping. In sexy underwear, the women are all drinking and having a good time. Half a dozen women and Jack are crowded into an upper berth. Jack is the only one wearing concealing sleepware. He begins to hiccup. One of the women puts ice down his back as a cure for hiccups, and notices that he is ticklish as she touches his back.
"She's ticklish!" she yells, and all of the women in the upper berth dig in and tickle Jack Lemon. He howls and shrieks, and begs them to stop, but they keep on tickling him. Finally, he reaches out and yanks the emergency brake cord, causing the train to stop abruptly, and sending all of the women flying out of the upper berth into the aisle.
My reaction: When I saw this film when it came out (I was 9 years old) I loved it. I wished I had been in Jack Lemon's role, and never pulled the emergency brake, so that they would have tickled me all night long.