can't (do something) for toffee
slang Is totally unable to do something. Primarily heard in UK. Oh, you'll definitely beat Sarah for that role in the musical—she's can't sing for toffee.
toffee-nosed
Describing someone who believes they are superior to others, especially due to their social rank or class. Primarily heard in UK, Australia. Feel free to go dine among the toffee-nosed snobs. I'm going to the pub.
can't do something for toffee
BRITISH, INFORMALIf someone can't do something for toffee, they are very bad at doing that thing. Within a step or two it was clear she couldn't dance for toffee.
not be able to do something for toffee
be totally incompetent at doing something. British informal 2000 Times Wordsworth himself couldn't spell for toffee, and his punctuation was extraordinarily bad.
can’t do something for ˈtoffee
(old-fashioned, British English, informal) if somebody can’t do something for toffee, they are very bad at doing it: He can’t dance for toffee!