This is the 11574th most frequent French word.
régaler
To treat or entertain, especially with food or enjoyment.
In this sentence, 'régaler' is used to express delighting someone by providing something enjoyable or pleasing, such as a meal.
Je vais vous régaler avec un délicieux repas ce soir.
I will treat you to a delicious meal tonight.
Here, 'régaler' is reflexive ('se régale'), indicating that the subject is greatly enjoying something.
Elle se régale chaque fois qu'elle mange de la tarte aux pommes.
She thoroughly enjoys every time she eats apple pie.
In this instance, 'régaler' conveys the idea of providing enjoyment or amusement through storytelling or entertainment.