to put someone on blast
to make someone's shortcomings public
This person is usually an attention seeking asshole that needs to be slapped. The reason for telling is not to be informative but rather to cause trouble
"Thanks for cleaning the kitchen Sarah." "Sarah didnt clean it, I did." "Why did you sirene on me?!"
"What's wrong with John." "He's fine! Just feeling a little guilty because he's cheating on you" "That may be the case but at least he's not a fucking sirene!"
She is a beautiful girl, she likes active things she will always tell the truth even when you done want to hear it, many boys will try and talk to her but she won't talk back, she is very silly at times and she will be your best friend when you need her, always sticks up for people, loves animals and nature and elders, she is very kind and out-spoken about things.
You know Sirene? She's walking this way