chinese whisper effect 

When gossip or a story is being passed around, being told to one person, who retells it to another, and with each re-telling the story is changed slightly, until by the last re-telling it has changed almost beyond recognition of the original story.

Guy 1: Dude, John just told me about that girl and the guy from down the hall having sex in the closet!
Guy 2: No dude that never happened! He just grabbed her boob accidentally outside of the closet. That's a serious chinese whisper effect!

chinese whisper effect by IBegToDiffer June 30, 2007

Chinese-Whispers Effect 

The effect that occurs when something is heard through word of mouth, a variation on the original message or topic of discussion, as commonly happens in the childhood game of Chinese-Whispers.

"Man i heard you were walking coast to coast!?, for charity or something?"
"Nope, but my mum is."
"Huh, must have been the Chinese-Whispers Effect"

Chinese-Whispers Effect by blurnsgha February 25, 2008