When going down on someone, use your thumb to plug up any open hole's that are on your partner, making them have less wholes for any fluid to enter or exit.
Not to be confused with the "Kentucky Bubbler", the Kentucky Plug is a modern ballistic variant which is typically performed by oneself in a seated position. The individual utilizes one or both thumbs and a large amount force to initiate an unexpected explosion in which no real satisfaction is achieved.
It was a slow Tuesday, until I turned on YouTube and watch a tutorial on the Kentucky Plug.