I have been called a slacker, someone that doesn;t have a work ethic and avoids work
Aw really? That's mean of people! Why do you think they would call you that?
The word slacker has been around since 1790 or so 
Oh really? How did they come up with the term slacker?
During WWI here in the US the word slacker meant a person was not helping with the war effort kind of similar to a draft dodger
Oh, that's interesting! What personality traits cause someone to be considered a slacker?
No work ethic or basically avoiding work
Oh, I see! Well I guess that's an unfortunate trait to have!
In WWI when they looked for draft dodgers they called it "Slacker Raids"
Ouch! Well, I guess people who dodge the draft really are slackers!