A wicked tongue noun phrase
The tendency to speak in an abusive, vulgar or nasty manner
She has such a wicked tongue that her husband can not bear her.
Rosa has a wicked tongue, so people don't want to talk with her.
To talk the main part at once, or avoid talking about what is not important
To say something without thinking
If a person has the devil's own luck, he or she has extremely good luck.
A: Yesterday I won a $10 million lottery jackpot and today I won a car in a draw.
B: You have the devil's own luck.