The entire plot revolves around this box social, at which women make a lunch hamper and men bid on them. The man who bids the highest amount on a hamper takes the woman who made the meal on a picnic with it. The female lead Laurey Williams (played by R & H regular Shirley Jones) is miffed at her beau, Curly McClain (R & H regular Gordon MacRae) because he was late asking her to the social. So she stupidly refuses his invitation and to punish him, agrees to go with the creepy peeping Tom, Jud Fry, who is a farm hand. She soon regrets this because, as mentioned, he is a pervy sex-pest. On the night of the box social, he picks her up and, instead of driving to the social, takes her off somewhere and tries to put the moves on her. Laurey manages to escape him and drives off without him to the social, where she proceeds to helpfully not tell anyone what happened.
I'll stop here; suffice to say Oklahoma! and most other Rodgers and Hammerstein musicals don't do it for me, though I do like a lot of the songs from those musicals. And if you enjoy them, great: we all have our guilty pleasures. But The Sound of Music is really the only R & H musical that I would voluntarily watch more than once.