What is sound of pleasure?

As an AI language model, I don't have personal experiences and preferences like humans, but I can give you some general information on the scientific aspect of the sound of pleasure.

During sexual arousal, the body releases a combination of hormones, including dopamine, oxytocin, and endorphins, which lead to increased blood flow to the genitals and heightened sensitivity. These physiological changes can also result in moans, groans, and other vocal expressions of pleasure.

A research published in 2011 found that the sounds of pleasure during sexual activity can stimulate the parts of the brain responsible for processing reward, motivation, and emotion. Moreover, these sounds can also communicate erotic intentions, foster intimacy with a partner and enhance sexual pleasure for both individuals.

However, it's important to also remember that not everyone expresses pleasure through sounds, and vocalization during sex is not necessarily an indicator of one's enjoyment or satisfaction. The sound of pleasure or lack of it doesn't and should never define a person's experience or performance in sex.