There Are A Few Meanings

Purple Monkey Dishwasher is a non-sequitur that has evolved into commonly used response to opinions stated based on hearsay and unconfirmed rumors.

This blog is the response to the opinions and unconfirmed rumor mongering in the media today.

From the Urban Dictionary, the other ways this phrase is used.

1. purple monkey dishwasher
Despite claims this phrase originated on "The Simpsons", it actually existed long before it was used in the show. The phrase is intended to portray the distortion of facts when passed from person to person.

Its use in "The Simpsons" was accurate; Bart starts a rumour by whispering to one person who whispers it to another, etc. By the time the rumour reaches the front of the crowd, the phrase "Purple monkey dishwasher" has been added to the end due to people mishearing the original rumour as it passed from person to person.

Due to the popularity of "The Simpsons", the phrase has since become a commonly used response to opinions stated based on hearsay and unconfirmed rumours.
Person A - "I heard from a friend of a friend that John cheated on Linda with Karen!"

Person B - "Purple monkey dishwasher."

2. purple monkey dishwasher
A nonsense phrase seen widely in an early Simpson's episode. Added at the end of a Chinese whisper, ironically, as there are few if any phrases which can be mistaken for "purple monkey dishwasher". For this reason, it is sometimes used to check if communications are working properly, instead of ie. "testing" "mic check" "test test 1 2 3 check" and/or "syphilis".
"Say purple monkey dishwasher, if you can hear this."

3. purple monkey dishwasher
Derived from the simpsons, a term that should now be applied to the end of every game of chinese whispers - broken telephone.
Person 1: "The Sky is blue"

Person 17: "The man eats poo, purple monkey dishwasher"

4. purple monkey dishwasher
Originating from an episode of the Simpsons (episode 2F19 "The PTA Disbands")
It has taken on a comical nonsensical interjectional use... appropriate as comic relief or as a tension breaker
-'Jeezus!! who the hell ate the last jos louis?'
- 'purple monkey dishwasher?'
get this def on a mug
by whiskymack Jul 14, 2004 share this

5. Purple Monkey Dishwasher
A dishwasher made by the world famous 'Purple Monkey' brand. Comes with one year garantee.
"That dishwasher is l33t"
"I know, it's Purple Monkey"
get this def on a mug
by fire extinguisher Nov 1, 2004 share this

6. purple monkey dishwasher
the answer to any "why" question you do not know.
"Why didnt you eat your veggie?"
-"Purple Monkey Dishwasher."
get this def on a mug
by melissa Nov 25, 2003 share this

7. purple monkey dishwasher
A quick inconspicuous phrase to alert your friends of the pressence of a suspicious looking/acting character.
in other words - 'lets get out of here'
Out shopping with friends you notice a stranger eyeing off your handbags but your friends are too distracted to notice....
friend - "do you think this dress will look good with my red heels?"
you - "purple monkey dishwasher!!!!"