toffee
Concise Oxford English Dictionary © 2008 Oxford University Press:
toffee/ˈtɒfi/
▶noun a kind of firm or hard sweet which softens when sucked or chewed, made by boiling together sugar and butter.
– phrases
not be able to do something for toffee Brit. informal be totally incompetent at doing something.
not be able to do something for toffee Brit. informal be totally incompetent at doing something.
'toffee' also found in these Oxford entries:

