Created by regulars of the game "Yohoho! Puzzle Pirates", the term ___tart refers to someone who does an activity frequently and with much skill. Usually used as not an insult, but as recognition.
Docktart represents someone who spends alot of time simply chatting, and not taking part in the actual purpose of the game.
"Wow, there he goes docktarting again. I love how he never shuts up."