Literally meaning to fill your socks with honey and wear them like that for the day. However, it is used in slang to refer to sexual intercourse. Originating from the idea of hanging a sock on one's door, but in this instance the sock would be full of honey. Also, the idea of filling a sock with honey has certain sexual undertones.
To roommate: "Hey, me and my girlfriend are going to be Honey Socking later tonight, can you clear out?"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi