shampoo ambush 

Known in scientific terms as 'Shampupicus Abushulance". It is when a shower cap is pulled over an unsuspecting victim, who is then squirted with shampoo, and then scrubbed verociously with toilet bowl scrubs. This is known to happen to people who refuse to shower.

"Did you see that Seth kid today? His hair was like a mirror!"
"Yeah, we should totally shampoo ambush him..."

shampoo ambush by The Forrest Fire September 23, 2007

Shampoosterbate

The act of shampooing your hair while simultaneously master-bating with your other hand.

Last night I only had ten minutes in the shower so I was forced to shampoosterbate to save time.

Shampoosterbate by JRED33 October 23, 2013

shampoo and conditioner ran out at the same time 

no longer have the will to live

“my shampoo and conditioner ran out at the same time”

“im so sorry, please buy more (buy more means gain the will to live)”

shampoo and conditioner ran out at the same time by glyz December 11, 2022

shampoo

A concoction used to cleanse one's scalp. Its ingredients consist of:

1 part sham
1 part poo

Dang, I wish Greasy Gary would use some shampoo.

shampoo by Wojeezy May 25, 2008

Fairy Of Shampoo 

An amazing txt song that makes moas ascend everytime they listen to it

Fairy Of Shampoo is heaven to the ears

Fairy Of Shampoo by goofyeedam456 July 24, 2022

Shampooing the ferret 

a hand job. the up and down movement that simulates a ferret shampoo.

my wrist is sore from shampooing the ferret for about 20 minutes last night.

Shampooing the ferret by asorethumb March 30, 2010

shampoo loop 

the occurrence of multiple shampooings or washing body parts during a shower because you get distracted and forget what you've already cleaned.

Writer: I had a great idea for a book this morning in the shower, but it led to a three round shampoo loop.

Friend: I hate that!

---

Wife: You used all the hot water!

Husband: Sorry, I got stuck in a shampoo loop.

shampoo loop by bomt April 19, 2010