It was a lovely day at the Fairy Tail Guild. The sun was out, the sky was clear, and it was the perfect temperature.

So why the hell are Grey and Natsu cowering in a corner!

Erza walked up to them, her head tilted.

"What the hell are you two doing?" Natsu and Grey looked up, scared as hell, before dragging Erza down to their level.

"Shhhh!" Nastu gestured wildly at that. "Stop it! You're going to get us caught!" Erza raised an eyebrow at this. What in the world could both of them be scared of?

"What…do I even want to know who you pissed off?" She shook her head. Was it Master? Maybe.

"It was Lucy. We read her book today." Grey mumbled something incoherent. Erza raised her eyebrow. "So?"

"It's uhh…you know, that time?" Erza went chalk white. She was next seen eating several slices of strawberry cheesecake at the bar with large clouds of dust surrounding her.

"NATSU! GREY!" The door flew open with a ear cracking bang. The creature coming in could only be noted as the king of hell Herself. Two seconds later, the creature disappeared with Natsu and Grey.

"What just happened?" Mira Jane asked, shaken by the appearance of the demon.

"Natsu and Grey…Natsu and Grey… discovered why you should never, ever piss off a nice woman.

Mira Jane paled at that. "You mean, they…"

Erza nodded, the whole Guild watching with either very red, or very, very pale faces. "Yup."

She swallowed, and started heading out the door, gently closing the poor thing.

"Natsu and Grey read Lucy's book while she was PMSing. Morons."

Natsu and Grey were discovered two weeks later hanging off a large tree branch, out cold and horribly battered. They stayed in the hospital for three weeks and always made sure to avoid Lucy while she was at 'that time of the month' for several months following.