A software upgrade that is somehow not as good as good as the software it replaced.
"I just downloaded the fucked-upgrade of Photoshop and now you can't 'undo', you can only 'step backwards'.
"The new version of such and such trashed my hard drive. That's one fucked-upgrade."
1.: I guess they came up with a new fucked-upgrade to Yahoo! Mail. You DL it?
2.: Nope.
1.: Me neither.