Jennifer Lawrence has been preparing for her Hunger Games role since she was a little girl.

The actress, who stars in the weekend smash film adaptation of the dystopian teen trilogy about a televised battle to the death, told David Letterman on Late Show this week that her two older brothers roughhoused with her growing up.

"I've got scars all over my body," she said. "The best part – they would fight each other over who could fight me."

One ritual in particular was particularly agonizing.

"When I was doing the gymnastics phase, they used to pin my feet back behind my head – I can't do this anymore – and then they would get our dachshunds and put peanut butter all over my face,"

 she said. "We had three dachshunds and then the dogs would do this [go crazy licking]. And then they'd shut the door, lock me in the basement with dachshunds.

"And now – karma! – I go on talk shows and tell everybody. I win!"

Letterman, who feigned a therapy session throughout the interview, said, "I'm going to make two calls, Jennifer. The first one will be to Amnesty International, and the second one will be to Dick Cheney. I think we have something here. It might replace water boarding, that little dachshund deal."

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