The sleepy sister-in-law

My story dates back to a few years ago, my name is Claudio and one August morning I and two other brothers-in-law with their respective wives decided to spend all together the mid-August holidays in a tent.
A brother-in-law of mine, however, had the problem that on the day of August here in Sardinia the opening of the hunt took place, and he could not help but go there.
Then he said that since he had to get up early he had to go to sleep at his…