When one mistakenly thinks that one is alone in the house/apartment, and begins to do things one wouldn't do it one was with other people -- like singing, laughing at pictures of Hannah Montana, or fapping.
Chinbo: WHOOAHHHH WE'RE HALF WAY THERE! WHOOOOAHHHH LIVIN ON A --
Tyrone: Dafuq you doin' Chinbo?
Chinbo: Oops didn't see you there! You were so quiet you caused The Shower Effect...
Tyrone: Dafuq you doin' Chinbo?
Chinbo: Oops didn't see you there! You were so quiet you caused The Shower Effect...
by Eye_Ronick December 1, 2013
While urinating into a lavatory, the main stream is entering as normal, but a shower like spray diverts and causes particulates of urine to land on the toilet seat. This is usually followed by a rapid wiping of the seat with toilet roll, often masked by the flushing of the toilet itself.
by Bergmannlovespetersoysoy October 22, 2007
The shower bong effect is when you rip an average fart in the shower and you almost have to exit because of the intense smell.
by runbucky March 20, 2011