Thanks, Anime_Reigns!

Jellal had promised he wouldn't sin again. And he didn't. Until one Saturday afternoon.

That day Erza drove him crazy, trying to convince him they didn't need a new vacuum. Why would they need one when they already had a perfectly good one?

The second Erza left their apartment, Jellal committed the sin.

When Erza came back that evening, she shrieked. 

The mighty Titania shrieked.

"I'm afraid the vacuum walked over to the dumpster," Jellal said, grinning at his wife. "Too bad we don't have a vacuum."

What was the sin?

It was quite simple, and involved a whole lot of glitter.