The Sonic & Knuckles Effect only happens when 2 characters are compared to each other. One character may have more careless, goofy, "radical" behavior, and the other character may have serious and focused behavior. The original form of the Sonic & Knuckles Effect was, well, Sonic & Knuckles, with Sonic being the more careless character, and Knuckles being the more serious character.
Person 1: Hey! Cmon, what are you doing here just sitting around?
Person 2: I'm trying to look after my belongings.
Person 3: It looks like you two have the Sonic & Knuckles Effect
by JimJanus25 April 13, 2023
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Damn that one small camel toe, Jimmy: thats a cat knuckle.
by tavicars April 1, 2015
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A crusty knuckle is when you have your girl stimulate your prostate by shoving her middle finger up your anus. Look at her knuckle once she is done.
I blew a load so hard while Christina was giving me a Crusty Knuckle.
by John Chapman May 16, 2007
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A person who steals drinks by using a refill cup more than one day.
Candy knuckles keeps using the same cup for weeks to get free drinks.
by Jerktog October 14, 2023
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When one reaches climax by fingering with a bent finger in the ass
Oh shit, I got the gravy knuckle last night”

“DAMN LUCKY”
by shhhitisasecret April 6, 2021
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