Often used as a sales term to describe how to motivate a potential buyer to buy based on what other people are doing. Also referred to as "Keeping up with the Jones's."
Salesperson: "I just came from Mr. Jones and he liked my product so much he bought three." This is an example of the Jones Effect.
by jay-b-c May 19, 2009
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The misdirected rage generated by fans of a particular character when that character is killed off or replaced by someone else. Often the rage prevents them from giving a fair opinion of the new character. Originates from the BBC series Doctor Who, when fan favorite Rose Tyler was replaced with Martha Jones.
Example #1

“I hate Martha Jones so much!”

“Why?”

“Because she isn’t Rose Tyler!”

Example #2

“I hate Clara Oswin Oswald!”

“Why?”

“Because she isn’t Rory and Amy!”

“That’s the Martha Jones effect.”
by flashwildecard January 3, 2014
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When your favorite restaurant is closed on certain days or at a certain time and your craving for it becomes stronger during those periods.
I usually feel the Jones Effect on Sunday because Paseo is closed and I cannot get my Midnight Pork sandwich.
by JeoCasher March 30, 2009
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Just like Jim Jones, Donald Trump has the power to do anything legal or illegal and his supporters will continue to back him up regardless of any consequences they may face just to protect their leader.
Bro, Donald Trump has that damn Jim Jones Effect on your brother, dude he’s brainwashed.
by LABolTFactoR October 9, 2020
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