Diana

“Can you surf really well, then?"
I looked at Grover, who was trying hard not to laugh.
"Jeez, Nico," I said. "I've never really tried."
He went on asking questions. Did I fight a lot with Thalia, since she was a daughter of Zeus? (I didn't answer that one.) If Annabeth's mother was Athena, the goddess of wisdom, then why didn't Annabeth know better than to fall off a cliff? (I tried not to strangle Nico for asking that one.) Was Annabeth my girlfriend? (At this point, I was ready to stick the kid in a meat-flavored sack and throw him to the wolves.)”
― Rick Riordan

“Let us find the dam snack bar," Zoe said. "We should eat while we can."
Grover cracked a smile. "The dam snack bar?"
Zoe blinked. "Yes. What is funny?"
"Nothing," Grover said, trying to keep a straight face. "I could use some dam french fries."
Even Thalia smiled at that. "And I need to use the dam restroom."
...
I started cracking up, and Thalia and Grover joined in, while Zoe just looked at me. "I do not understand."
"I want to use the dam water fountain," Grover said.
"And..." Thalia tried to catch her breath. "I want to buy a dam t-shirt.”
― Rick Riordan, The Titan’s Curse

“God alert!" Blackjack yelled. "It's the wine dude!
Mr. D sighed in exasperation. "The next person, or horse, who calls me the 'wine dude' will end up in a bottle of Merlot!”
― Rick Riordan, The Titan’s Curse