From this link:

This:

"Let's freeze a few," Alai said. "Let's have our first battle. Us against them."

They grinned. Then Ender said, "Better invite Bernard."

Alai cocked an eyebrow. "Oh?"

"And Shen."

"That little slanty-eyed butt-wiggler?"

Ender decided that Alai was joking. "Hey, we can't all be niggers."

Alai grinned. "My grandpa would've killed you for that."

"My great great grandpa would have sold him first."

"Let's go get Bernard and Shen and freeze these bugger-lovers."