After seeing people starting to build a pyre for the dead things ((presumably somewhere nearby?)), Garashn says, I think I'll go help build the pyre. Not that I'd really mind if these ghouls came back to life, though; that fight was the most fun I've had all day. When it's finished, he helps pile the bodies onto it, and then stays behind for the funeral, during which he is unusually quiet and doesn't even make any comments about the fun of killing things.
Once the somber mood of the funeral passes, Garashn goes back to The Broken Mast, and tells everyone about how great he is, and how he saved the whole town from ghouls.
He gives the rest of the group some token acknowledgement, but the way he tells it, he's the hero of the tale. He does it in a likable sort of half-sarcastic self-deprecating kind of funny way that shows he doesn't take himself too seriously ((I feel like there's a word I should be using here, but I forget what it is)), not a 'make everyone hate him because he's such a loudmouth' way. The story is accompanied by rowdy, over-the-top, seemingly drunken (but not actually intoxicated) actions, including but not limited to jumping on and off tables, kicking over chairs, etc. Try not to damage anything, but if something happens to get broken, he'll offer to pay for it, after jokingly pretending to hide it behind his back.
If any drinks offered to him for his tale, he gladly accepts the offer, but if not, he buys his own.
((If you want me to roleplay the whole bar thing more specifically, I'd be glad to, but it might be better for game speed if I didn't.))