The context of the following conversation is Austin saw Bailey sitting there grinning at him. Austin grinned back at Bailey.:
Austin says I am having a really good dinner, but I don't know what is going on..
The friend responds What do you mean by that?.
Austin responds Well this person over there grinning at me, and I have no idea why..
The friend responds Yeah, that person is giving you quite a grin..
Austin responds I know, I am going to just grin back at him until he stops..
The friend responds That's a good idea to just do that..