How does Guy de Maupassant create suspense and surprise at the end?

This question is incomplete. Here is the complete question:

Reflect on your reading of Guy de Maupassant's "An Uncomfortable Bed" by answering the following questions about the mood and tone of the work. Consider the end of the story. How does Guy de Maupassant create suspense and surprise at the end?

Guy de Maupassant manages to create an atmosphere of humor and suspense since the story from the beginning is humorous, however for him it is a serious situation and he does not know what will happen next.

Explanation:

The author throughout the story has the reader wondering what will happen next, even though everything that happens ends up being hilarious.

He is in his room in the dark, which creates an atmosphere of suspense but never abandons his humorous tone.

In case the protagonist's friends were very pranksters and he could even hear their laughter in the corridor since he enters the room and closes it.

The suspense is so much about "what a joke could happen next" that in the end, the disaster ends up being made by the protagonist himself.

yeah! it's really me with my homework, you should try it!