The word’s origins come from sham, French, meaning false or fake - and poo, slang, referring to biological excrement more commonly referred to as “shit”. Thus, one can only assume that shampoo is “false excrement” or “fake shit.”
Examples of shampoo include: Prell, Clairol, Nioxin, Suave, etc.
by nethcev! August 23, 2006
To massage, as in a head. noun
I once got shampooed by a shrubbery.

(see definition for shrubbery)
by Audrey Karper September 01, 2005
While a girl is giving you a blow job when you are about to cum you take her head and make it face down then you cum all over the top of her head.
Mary hadn't taken a shower in a while so she insisted on me giving her Shampoo
by Peter File 69 January 20, 2008
Any instance where something is mistaken for shit.

Holy Christ, someone shit in the pool!

Calm down, It's probably just shampoo.

Yeah, look, it's half a snickers bar.

They were just shitting us.
by Zoggg September 05, 2007
intention to swear at a man
im going to shampoo any minute now r-jizzy barking
by loojaro August 17, 2006
To lie blatantly about something outrageous and pointless even when you are caught in the stupid, non-sensical, and idiotic lie.
He pulled a shampoo and tried to continue to lie about sleeping with the woman even when she told everyone else that it never happend.
by GoodOleDayz April 02, 2005
to do the dirty under the covers when nobody is watching
Yo man, me and veronica totally SHAMPOOED last night!
by Kerrie March 16, 2005

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