[Thankfully, the answer to that question's easy enough, Iwaizumi leaning over to flick Oikawa in the forehead.]

You can start by not calling me Iwa-chan anymore. We're not kids anymore.

[Even if he knows Oikawa won't ever stop calling him that. It's still a dumb nickname, one that makes him roll his eyes every time he hears it. At least there'll always be copious instances of Trashykawa to counter it.]

And don't be so smug. Maybe I'll change my mind before then.