I just remembered another great f/m scene from old Laurel & Hardy movie called "Way Out West." This is one of the most intense tickling scenes I've ever seen in a popular movie.
Stan and Ollie are to deliver a deed for a gold mine to a young lady named Mary Roberts in a Western town. Unfortunely two crooks get wind of this: Mary Roberts' caretaker Mickey Finn and his very attractive blonde wife Lola, who works as an entertainer. Lola poses as Roberts and subsequently the boys mistakenly deliver the deed into her greedy hands. Before they leave town, Stan and Ollie discover their mistake and go back to confront the crooks. There is a big scene that's quite comical, where all four of them are fighting over the deed. At one point, Stanley grabs the deed and disappears into another room. The woman follows him in and quickly locks the door behind her.
Outside the room, Oliver tries to force open the locked door, but the man brandishes a revolver and tells him to get away from it.
Inside the room, Stanley was calmly wearing his normal look of puzzlement and confusion. The blonde advances toward him slowly, fixing him with a look of grim determination. "Give me that deed," she demands. Stanley puts the deed inside his his shirt and gives her a look of defiance. She pounces on him trying to reach in his shirt while they are struggling. Stanley begins a high pitched cackling. She chases him around the room, throws him on the bed and starts tickling the daylights out of him. It's a lengthy scene as Lola just gives poor Stanley the tickling of ten lifetimes. She's absolutely merciless. Even after she finally gets the deed and stops tickling him, he continues the uncontrollable laughter. Ultimately though, our heros regain the deed and deliver it to the rightful owner, Mary Roberts.