Wiktionary
vb. (context idiomatic English) To have endured all that one can.
Usage examples of "have had it".
There must be hundreds of fathers and husbands and boyfriends thirsting for his blood-and that's not counting any members of the fair sex who might have had it in for him.
But yeah, the thought did occur to me that someone could have had it in for her.
DE GUICHE: I have one cannon left, and have had it carried there-- (he points behind the scenes): --in that corner.
Marry, I would not have had it on my own skull for a silver penny.
I am glad to have had it doubted, for in that circumstance I find a sufficient assurance that it needed to be told.
She must have had it relatively easy those last three foggy nights of her life.
I would not have had it on my conscience for all the royalties in America!
I would not have had it this way, I would have wanted surer answers.