adj useless; crap: Hey, what happened to that new magical TV multi-remote thing you got? / Oh, I sent it back. It turned out to be a bit duff.
A poorly-researched dictionary of British Slang words and phrases, written by some guy off the internet.
adj useless; crap: Hey, what happened to that new magical TV multi-remote thing you got? / Oh, I sent it back. It turned out to be a bit duff.