Rick Riordan, The Mark of Athena

"Everyone thinks you've been kidnapped,"he said. "We've been scouring the ship. When Coach Hedge finds out- oh, gods, you've been here all night?""Frank!"Annabeth's ears were as red as strawberries. "We just came down here to talk. We fell asleep. Accidentally. That's it.""Kissed a couple of times,"Percy said.Annabeth glared at him. "Not helping!"

"Down in the water, Octavian yelled, “Get me out of here! I’ll kill you!”“Tempting,” Percy called down."

"She had to go on this quest. The fate of the world might depend on it. But part of him wanted to say: Forget the world. He didn’t want to be without her."

"Ceres wanted a united front in the plant war.""The plant war,"Percy said. "You're going to arm all the little grapes with tiny assault rifles?"

"We're staying together,"he promised. "You're not getting away from me. Never again."

"Leo couldn't help smiling. "That could be fun.""Fun"she said unhappily."Blue elephants.""Blue elephants.""Kiss me you fool.""You fool."

"Did someone just call me the wine dude?” he asked in a lazy drawl. “It’s Bacchus, please. Or Mr. Bacchus. Or Lord Bacchus. Or, sometimes, Oh-My-Gods-Please-Don’t-Kill-Me, Lord Bacchus."

"Delaying death is one of my favorite hobbies"

"Blackjack,"Percy said, "this is Piper and Jason. They're friends."The horse nickered."Uh, maybe later,"Percy answered.Piper had heard that Percy could speak to horses, being the son of the horse lord Poseidon, but she'd never seen it in action."What does Blackjack want?"she asked."Donuts,"Percy said. "Always donuts."

"The meeting was like a war council with donuts. Then again, back at Camp Half-Blood they used to have their most serious discussions around the Ping-Pong table in the rec room with crackers and Cheez Whiz, so Percy felt right at home."

"Sometimes wisdom came from strange places, even from giant teenaged goldfish."

"I'm the Super-sized McShizzle, man!"Leo said. "I'm Leo Valdez, bad boy supreme. And the ladies love a bad boy."

"Percy was getting tired of water.If he said that aloud, he would probably get kicked out of Poseidon’s Junior Sea Scouts, but he didn’t care."

"What are you talking about?"Narcissus demanded. "I am amazing. Everyone knows this.""Amazing at pure suck,"Leo said. "If I was as suck as you, I'd drown myself. Oh wait, you already did that."

"She'd secretly had a crush on him since they were twelve years old. Last summer, she'd fallen for him hard."

"Hercules,huh? Percy frowned. "That guy was like the Starbucks of Ancient Greece. Everywhere you turn--there he is."

"It's okay,” he said. “We're together.” He didn't say you're okay, or we're alive. After all they'd been through over the last year, he knew that the most important thing was that they were together. She loved him for saying that."

"Frank didn’t drop you on purpose,” she said. “He’s not like that. He’s just a little clumsy sometimes.”“Oops,” Leo said, in his best Frank Zhang voice. “Dropped Leo into a squad of enemy soldiers. Dang it!"

"One false step, and you’ll fall all the way to Tartarus—and believe me, unlike the Doors of Death, this would be a one-way trip, a very hard fall! I will not have you dying before you tell me your plan for my artwork."

"This is Annabeth,” Jason said. “Uh, normally she doesn't judo-flip people."