Probably closer to six seconds. It depends on how indecisive you are about what you want it to look like.

[ the saucy response makes him laugh, and he lets himself be steered toward the display in question. there's enough black and red there that he might do a little poking around of his own, but yikes, that bright yellow.. hideous. ]

Well.. I could probably divine your name if you really want me to, but that's probably not the kind of thing I'd want to do in the middle of the street. [ he scoffs, mock-offended. ] And it wouldn't involve any runes. Please, I'm not Asgardian. [ he's not actually sure if asgardians use runes in their magic, come to think of it. loki never seems to need to. ]