compulsory time for sleeping between 15:00-17:30 (after lunch)on a couch not in the bed. In Spain, and especially Southern Spain, siestas can be endeless sometimes.
Shops close and the world stops during these hours, everyone is having la siesta.

In the Roman Empire, people also had siesta, slept for a couple of hours to go on idling more energically the rest of the day. The word siesta comes from the Latin word sexta (Spanish sexta) which means "the sixth hour" (Roman Time).

The habit of having siesta is due to the abundant quantity of food ingested at Spanish meals together with the hot weather. It is attested that biologically, because of the great amount of food eaten, the blood pressure decreases giving sleepiness as a result. Besides, the Tropics between these hours is when the sun heats most and even animals go back home seeking for a place to rest.

Whenever making a congratulatory remark, this is what you say. Made popular by Kamala Harris when she and Joe Biden won the presidency.

A small sleep, a nap

A party in a bed, with your eyes shut. A sleepy fiesta.

Consensual sex with a sleeping person.

the rest taken after after a full day of heavy drinking

Period of downtime occuring after John Thomas expels his gentleman's relish.