Madness!!

As a general rule, Wally Darling was a tidy sort of creature. The type to carefully dust where no guest was bound to see and reorganize his cupboards whenever the mood struck him. So, on some whim he was sure to regret later, Wally uncharacteristically woke up on some morning before the rest of his neighbors did with the pressing urge to clean underneath his porch.

"I can't believe I've never thought of this before." Wally mused to himself, shuddering at the thought of the cobwebs he was sure to find underneath his home.

He stuck his blue pompadour underneath the crawlspace and frowned at the expected dirt, dust, and overall muck. What he wasn't expecting however, was the gaping black void that swirled and drew him in almost hypnotically. It wasn't a hole or a pit, it looked like Wally was looking at nothing at all, if such a thing was possible. For a wild moment he thought of falling inside and being swallowed by it, saw his neighborhood, his entire world consumed.

Wally turned off his flashlight and stood up, skittering inside with a nervous energy so unlike him.

"...I'll clean that up later."

It was a lie, of course.

Or

Wally discovers plot holes and suffers for it.