Dic: knock out of

• Max knocked the truth out of the spy.
• Lefty knocked the story out of Max.
• Timmy knocked the stuffing out of his pillow.
• Someone knocked the coins out of my piggy bank.

1. knock something out of someone: to beat someone until something emerges or dissipates.
2. knock something out of something: to beat or knock on something until something comes out.

.... http://idioms.thefreedictionary.com/knock+out+of