User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-4517591-20121006071543/@comment-4385896-20121006125225

but overall the book is great! this is my favorite lines so far:

Piper:Like water leaking through a dam

Percy:Yeah. We've got a dam hole

Piper:What?

Percy:Nothing, Inside joke.

HAHAhHAHAHA THE RETURN OF THE DAM JOKE!