What's the meaning of "who has it coming"?
Why can't she just go with the flow, my wife? Why is it so easy for her to call women with cheap perfume "whores" but when it comes to telling a little boy "I'm a giraffe" it's more than she can handle? It really gets on my nerves. Makes me want to hit someone. Not her. Her I love. But someone. To take out my frustrations on someone who has it coming.
What's the meaning of "who has it coming"?
Thanks!

Question

What's the meaning of "who has it coming"?
Why can't she just go with the flow, my wife? Why is it so easy for her to call women with cheap perfume "whores" but when it comes to telling a little boy "I'm a giraffe" it's more than she can handle? It really gets on my nerves. Makes me want to hit someone. Not her. Her I love. But someone. To take out my frustrations on someone who has it coming. 
What's the meaning of "who has it coming"?
Thanks!

Answer

If someone "has it coming" for them, it's kind of like saying they are expecting something to happen to them, good or bad. For example
john: "Remember that teacher that used to slap her students in grade school? "
mary: "Yeah! what about her?"
john: "I heard she broke her leg! She got hit by a car!"
mary: "Oh really? ...well, she had it coming for her.."

That is a negative example. I can't really think of a positive example haha, if there are any haha.

Answer

someone who deserves it

Meaning they have done bad and if something bad happens to them then they "had it coming"