She was in the country as part of her promotional appearances for the first-person shooter multiplayer PC game, Sudden Attack, for which she is the brand ambassador.
Moretz performed in the Korean-language sketch on March 5 alongside comedian Yoo Se-yoon as a Korean boy's American girlfriend who prepped for a meeting with his parents by watching too many Korean dramas. By the end, she slaps her boyfriend with kimchi, as one does when they think they're a soap opera character.
A little background is needed before you watch, however: the skit mocks a well-known scene from the Korean TV dramedy, Everybody, Kimchi!
Even though the entire skit is in Korean -- including the If I Stay star's speaking role -- it's quite easy to figure out what’s going on, as slapstick is a language understood around the world. Also, she yells, "Oh my god!" and "What?!" a few times, which is also very helpful.
We're not sure if we love Moretz's Rainbow Brite-inspired take on traditional Korean apparel or that dramatic, soap opera expression she hams up at the end, but either way, this sketch is kind of weird, yet mostly adorable.
Moretz seemed very appreciative of the guest spot, as she shared a brief clip from it on Instagram along with the caption, "Exciting to be the very First American on SNL Live and to speak in only Korean!!!"
The Georgia native enjoyed her entire trip to Korea, as she shared a cute collage on Sunday to thank everyone she met during her overseas visit. "Thank you so much to all my amazing Korean fans and to all the people we met over this trip who welcomed us in and made us feel so connected to your beautiful culture!!" she wrote on Instagram, ending with, "I'll be back soon," and a heart emoji.