Retweet Offender
A person who constantly retweets on Twitter
Example
I realized after about a day of following Joe that he was a retweet offender so I unfollowed him right away.

Retweet offenders may receive up to 6 months of unfollow time
Related Slang
RT | Retweet |
PRT | Partial retweet |
PRT | Please Retweet |
MRT | Modified retweet |
rthx | Retweet thanks |
Tweet | Twitter post |
Handle | Twitter username |
Attwicted | Addicted to Twitter |
Twaddict | Twitter addict |
Twewbie | Twitter newbie |
A slang word for a person who retweets a lot on Twitter.
A retweet offender can be very annoying on Twitter as he repeatedly fills up feeds with retweets of other user's tweets. Retweet offender's usually get unfollowed pretty quickly, which is necessary in order to discourage their destructive behavior.