An adjective, usually used to describe a person of somewhat advanced years, who is disagreeable to deal with, but has excellent, provocative chat, or banter.
Dave: Saw Frank today in the supermarket. The miserable bugger's convinced we should house all homeless people in jail and let them eat the prisoners.
Boris: Yeah, he's a bantankerous old git, isn't he?!
In World of Warcraft, a druid who acts as a tank. In order to accomplish the task, the druid must shapeshift into the form of a bear with atypically thick skin.
When a gentle man of leisurely intent hooks up at bar patron of the female type, who is/has a nice piece of ass - or poutang. This female can be called bartang.
When the clubs were about to close, all Jeb could think about was which piece of bartang could be a guaranteedscore.