Answer:
worst news means very very bad news.
Explanation:
you heard the worst news of your life means:the news you heard has the worst things.
this is just an example.
Here's an example sentence.
The girl laughed as her father, the "fitness expert", struggled to do a push up.
This shows sarcasm and irony because if her father calls himself a fitness expert, then why is he struggling to do one pushup. This is the opposite of being a fitness expert.
I’ll help you with your work I’ll text you from a 916 number