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1.
An intimate shower taken between 2 persons solely for the purpose of saving time, completely devoid of any sexual connotation.
"Oh shit, my alarm didnt go off"
"Shit... I have to be at work in 20 minutes"
"We'll just have to shower together"
"Hey man, thats gross"
"Nah its cool... It'll be a Business Shower"
"Aight dog"
by LEVIATHAN1000 July 23, 2009
 
2.
When two or more people take a shower together for non-sexual purposes, such as conserving water.
Joey: Dude that pool was nasty.

Rhett: Yeah we need to take showers.

Joey: Wanna just take a Business Shower?

Rhett: Hell yeah.
by Alfred Greenfield August 16, 2010