Spank her

Boruto sat on the couch. "Lay across my lap," he said.

"Yes, Boruto," said Hinata. She lay face down across his lap, as if bracing for what he had planned.

With a swift motion, Boruto struck his hand across Hinata's ass, causing her to wince in pain and for it to jiggle a bit with the ripples.

"You grounded me," Boruto said, spanking her again. "That makes you a bad mommy. And bad mommies should be punished."

He spanked harder and Hinata let out a small squeal. "Ah!"

"Say it," he grunted.

"B-bad mommies should be punished," Hinata said.

SMACK!

"Like you mean it."

"Bad mommies should be punished!" Hinata said in a more chipper voice.

"Much better." SMACK!