1920s slang... someone or something wonderful or remarkable.
The other definition says it's from the '50s... In the 50s, there was a strong nostalgic fad of everything 1920s, which is why this term may have been thought of as from the '50s.
The Cat’s Pajamas: When a bearded man performs oral sex on his female sexual partner and wakes up the next morning smelling like a vagina.
“Oh man, something smells fishy here!”
“Sorry fellas, I’m afraid it’s me. It appears I forgot to wash my beard after giving my girlfriend head last night. Looks like I got The Cat’s Pajamas!”
Ulzzang true definition is "best & "face" = best face in korean. They are basically people with above average looks, sometimes with the use of photoshop and haduri who post their pics online, some becoming internet celebrities.
"Hey, see that chick over there? She's pretty enough to be an ulzzang. :D"
EBK stands for "Elite Ball Knowledge." 1 In internet slang, "ball knowledge" originally referred to a deep understanding of football/soccer or basketball, but it has evolved into a broader term for having a highly sophisticated, deep, or niche understanding of any specific topic (such as music, movies, or subcultures).
Person A: "That scene was a direct homage to an unreleased 1982 Japanese indie film."
Person B: "Wow, EBK."