Both the actors were past their prime when My Little Chickadee was made, but to me it's still a very funny movie. West plays Flower Belle, a woman who's run out of town and can't return until she's respectable, i. e., married. She meets Cuthbert J. Twillie (Fields) on the train, and he proves more than willing to marry her to help her attain her goal. For West it's to be a marriage in name only, so a lot of the movie's humor comes from Fields' attempts to consummate the relationship. No one but Fields would woo a woman by admiring her hand and saying, "What symmetrical digits."
West slinks and flirts, Fields flounders, and the double entendres come thick and fast. There's even a Masked Bandit! I saw this movie more than 50 years ago, and I laughed for weeks about it. I still get a goofy grin when I think about certain scenes and lines of dialogue. You can watch the trailer in the post above, and if you think that's funny, then you'd like the movie. If not, time to rent The Hangover again.