The black ox has trod upon (one's) foot proverb old-fashioned
"Black ox" implies Satan.
Used in a situation in which one experiences problems or misfortune
He was in a traffic accident a week after being fired from his job. I think the black ox has trod upon his foot.
I think that the black ox has trod upon my foot recently. Yesterday, while I was doing my online test, the power went off.
This idiom is often used to express that you should accept an unpleasant situation or event because you cannot change it.
Once something has been done, you can do nothing but face the consequences.
Daughter: So I really want all my friends to have a great time. I was thinking it would be a good idea to have some candy out on the tables for people to snack on.
Mother: Well, if you want them to really enjoy themselves, candy is dandy but liquor is quicker.