Leaving it in to soak for a good long time.
/r/CockWarming: CockWarming - For people who enjoy the Cock Warming / Soaking Kink. Cock Warming, also known as "Soaking" is the act of keeping a cock 'warm' in either the flaccid or erect state inside of a vagina, anus or mouth **without (or very little) movement**. This subreddit is a safe space dedicated to those who have this kink, and to discuss the kink itself, ask questions, give advice or to post videos and pictures relating to the topic. - April 13, 2020 - 07:32