A fork of Rural Dictionary
A person who upon entering a building depletes the entire area of all the bandwidth therefore slowing down everyone's internet.
Greg walked into the dorm and my internet just stopped working because he is a bandwidth bandit.
During filesharing, people who suddenly jump in to download from you whilst you just want that one last file!
"Great! I'm at 68KB - What! Those damn bandwidth bandits have cut my throughput down to 8K!"