Bandwidth hog is a common slang term used to describe files that take a very long time to download, or an application that requires a larger amount of system resources to run or keep updated. For example, if you were downloading an application or file that required a lot of bandwidth for a long period of time you would say it was a “bandwidth hog.”
The phrase is also used to describe users on shared Internet connections who task the available bandwidth. For example a person logging in to check email is not a bandwidth hog, but a person who tags 500 MP3s for downloading would be considered one.
