Well, I guess it was not just me. This from IMDB
Marilyn Monroe required 47 takes to get "It's me, Sugar" correct, instead saying either "Sugar, it's me" or "It's Sugar, me". After take 30, Billy Wilder had the line written on a blackboard. Another scene required Monroe to rummage through some drawers and say "Where's the bourbon?" After 40 takes of her saying "Where's the whiskey?", 'Where's the bottle?", or "Where's the bonbon?", Wilder pasted the correct line in one of the drawers. After Monroe became confused about which drawer contained the line, Wilder had it pasted in every drawer. Fifty-nine takes were required for this scene and when she finally does say it, she has her back to the camera, leading some to wonder if Wilder finally gave up and had it dubbed.
After shooting was completed, Billy Wilder threw a celebration dinner at his home for cast members and friends. Marilyn Monroe was not invited. The crushed star had to have it explained to her that she had cost the production roughly half a million dollars with her delays and unprofessional behaviour. Wilder had generally unkind things to say about her after this film. When asked if he would do another project with her, he replied, "My doctor and my psychiatrist ... tell me I am too old and too rich to go through this again." After reading some of the things Wilder said about her in print, Monroe called his home and told his wife to please give her husband the message - "to go f*** himself." Wilder changed his tune later, commenting, "It takes a real artist to come on the set and not know her lines and yet give the performance she did." A year later, at the premiere of The Apartment (1960), Monroe threw her arms around him, told him how much she loved the picture, and whispered that she would like to play the lead in Irma la Douce (1963), a role that eventually went to Shirley MacLaine.