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1.
To slap a girl in the face with your dick when she's not looking.
Like in a Warner Brother cartoon when they step on a rake or shovel.
The other day Leah was sittin on my couch and I snuckk up and gave her a warner brother.
by OptimusPrimePhd December 04, 2010
 
2.
tell someone to lookout,
The next u see a police,warner brother!
by jb January 30, 2004