2 definition by Aaron Newquist

Top Definition

The person who sacrifices his or herself to the police so that the other people who commited the crime will not get in trouble.

"Hey, where's Tom?"
"He played the Johnny-boy. I hope they don't rough him up."

by Aaron Newquist April 09, 2008

A sexual act that involves a man or a woman slapping another woman's breasts, like slapping a puck in hockey.

Chris just totally played some knocker hockey with Stacy in the cabin.

by Aaron Newquist April 09, 2008