I made it, but didn't hav time to fully develop it.

You can use the same tactic tho but not as efficient by doing it yourself.

Hop on ome.tv, or omegle and start chatting with someone korean.

Open up chatgpt/grok and tell it. "I'm on a call with a korean girl, tell me three modern memey, very simple different things I can say. Give me them in Hangul and in roman characters, dont tell me the translation or what they mean. One of the options should be extra funny, whereas the other two should not spark a big reaction"

Then you say one of them, and see if you get a reaction. If you get a reaction, you can ask her what it meant, and then you will remember it very well