I gave him the job because he was willing to learn and seemed 'as keen as mustard'.
Now that we have computers, typewriters just don't 'cut the mustard' anymore.
She tried to join the soccer team, but she couldn't 'cut the mustard'.
(..) by the dying or the delirious. Have you ever been seen... like you were a man? In a diner once, a blind woman turned to me all of a sudden... and asked me to pass her the mustard. - But she was blind. - But she knew I was there. That doctor in the operating room... she looked right at me. (..)1998 City of Angels