[Wirt waves back, and doesn't mind having the obvious pointed out to him. He's just glad someone's doing this with him.]

Cool, cool. I've just been digging, um. Wherever, I guess? And once I dig a good hole, I've been burying stuff from that bag for anyone that digs things up for the Harvest.

[There's a sack nearby, which might look ominous to someone walking by that doesn't know what's happening, but Wirt shows him what's in it.]

Honestly, it's mostly Halloween decorations I got from the closets. Nothing like, actually scary.

[Granted he doesn't seem to think real skeletons are scary, but the point is there are no bodies in there.]