An occurence by which a person is beaten about the head and shoulders with a nightstick or other wooden club.
"HAW HAW HAW,that nigga resisted arrest,and got a wood shampoo for his troubles."
by CrowTard March 10, 2006
Being beaten by a wooden baton.
Billy got a nice dose of wood shampoo from the police.
by Paladin. October 24, 2011