What about it?

What about it?

What do you care? What business is it of yours? What does it matter? A defensive rhetorical question said out of annoyance, anger, or indignation. So I spend a bit of money on comic books and video games—what about it? I pay my share of the rent and the bills, don't I? A: "I heard you're not going to college after high school?" B: "Yeah, what about it? Plenty of people who don't go to college end up being successful."
See also: what

What about it?

Inf. So what?; Do you want to argue about it? (Contentious.) Bill: I heard you were the one accused of breaking the window. Tom: Yeah? So, what about it? Mary: Your piece of cake is bigger than mine. Sue: What about it?
See also: what