Do (one's) worst verb phrase
Usually used to imply that you are not afraid of someone or something because you believe that they can not harm you
To do the most harmful, violent, unpleasant or dangerous etc. thing that one can do
Tell him to do his worst. I am not afraid of him.
Do your worst. I won't tremble.
be braved to face the challenge or quit chances
To force someone to experience something difficult or unpleasant
Used to express one's anger, shock or disdain toward what someone has done or said
If someone "buys a/(one's) wolf ticket", they respond hostilely to one's threats of violence or boastful words.
It is a challenging phrase when someone discovers your faults.
The verb "do" should be conjugated according to its tense.