
Outside of sex - nautical term referring to tying a boat up at a wharf or pier; Tech. term used to describe connecting two pieces of hardware.
Example: "My phone was docked in its charger overnight."; "The cruise ship will be docked in the Miami Harbor Marina for two days."
In sex - the act of the penis being fully inserted into the anus (or vagina).
"Docked" is used as a metaphor here due to the penis "slipping" into the anus as a ship would, into a wharf or marina; or the way a spacecraft would slip into a landing bay (if you are into sci-fi). From a tech. standpoint, "connecting two pieces of hardware" speaks for itself. This is considered a "Double Entandre"; when the meaning of a phrase can be interpreted as either its intended meaning or as sexual innuendo.

Specifically, in this manga, "docked" refers to the seme's penis remaining in the uke's anus after they both fell asleep. No easy feat, by the way, if the seme is a "grower" and not a "show-er"! (If you are a "grower" the length of the penis increases dramatically when erect. If you are a "show-er" the length of the penis remains, mostly, the same whether flaccid or erect; the girth will increase when erect.

Outside of sex - nautical term referring to tying a boat up at a wharf or pier; Tech. term used to describe connecting two pieces of hardware.
Example: "My phone was docked in its charger overnight."; "The cruise ship will be docked in the Miami Harbor Marina for two days."
In sex - the act of the penis being fully inserted into the anus (or vagina).
"Docked" is used as a metaphor here due to the penis "slipping" into the anus as a ship would, into a wharf or marina; or the way a spacecraft would slip into a landing bay (if you are into sci-fi). From a tech. standpoint, "connecting two pieces of hardware" speaks for itself. This is considered a "Double Entandre"; when the meaning of a phrase can be interpreted as either its intended meaning or as sexual innuendo.
DOCKED!! LMAO