A phenomenon that occurs when your friend's boyfriend is shittier than a homeless man on Ex-Lax and therefore makes anything your own boyfriend does look like Jesus walking on water in comparison. Inadequate in general, but especially in the bedroom.
Examples of the Keith Effect:

Girl: Oh, honey, you got me a burning bag of dog shit for my birthday? You're so sweet, unlike that Keith guy!

Girl: Oh, honey, you remembered my name! God you're wonderful!

Girl: Oh, honey, I'm so glad you've only cheated on me fifteen times; I heard that Keith guy cheated on his girlfriend a hundred.
by alittlebirdvacuum July 6, 2011
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Popular and kind TikTok food reviewer, decider of restaurant fates.
A: "I watched Keith's video promoting small restaurant and it got pretty popular!"
B: "That's the Keith Lee effect for you."
by terribly_innaccurate March 11, 2023
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an effect based off of a guy on tiktok named keith lee who goes to restaurants and rates the food. a lot of times this way he saves small businesses by making them known
by loussmiley March 11, 2023
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The Keith Lee Effect is when a struggling restaurant soars in profits and popularity seemly overnight after a review of the restaurants food is posted on Tik Tok by food reviewer, Keith Lee.
Person 1: “Wow! Look how long that line is! I don’t remember that place ever being that popular before.”

Person 2: “That’s the Keith Lee Effect. He posted a review of the place a few days ago on Tik Tok and it’s been super busy ever since.”
by spaced out snail March 11, 2023
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The growth of a small food bussiness after keith lee does a review of the restaurants food.
Keith lee did a review of that restaurant and it experienced a lot of keith lee effect
by Colol02 March 11, 2023
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The Keith (Lee) Effect is the sudden financial improvement of small food chains. This effect has been named after a Tik-Tok legend named Keith Lee, who has taken over 2022 and 2023 and helps/promotes small businesses by rating their food on his page.
OMG, Mom, Keith Lee rated our food. Get prepared for The Keith (Lee) Effect ! <3
by ScientistFromFinland March 11, 2023
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When Keith Lee (tiktoker) reviews either small restaurants or huge corporation(s) food and (if positive) results in a massive increase in sales of the restaurant
Person 1: Hey, did you see that restaurant get the Keith Lee Effect?

Person 2: Yeah, dude we should check it out!
by N0mania April 2, 2023
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