When there is a main member to an image, however members in the background take the shine. Prominently occurs with Kim Namjoon of BTS.
"Look at Namjoon in the background of this picture of Jimin!"
"Oh my god! It's the Namjoon effect!"
by Taehighlight September 1, 2017
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The Namjoon Effect is a phenomenon that makes you become a wheezing mess.

It happens a lot when you watch a sinful namjoon fanfiction, or pictures of him showing his tiddies.

Please be careful, The Namjoon Effect can affect you at any time. Just thinking of him can make you fangirl, and in this case you will look like a fucking weirdo.

If you're exposed to The Namjoon Effect, you might be needing to wash your whole body with holy water.
exemple: "The Namjoon Effect hit me harder than puberty did!"
by Namjoon'sTiddies February 2, 2019
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