by keychain2 February 23, 2023

Originated from the famous Korean star Siward from the late 1990s/early 2000s who was known for doing strange things, it is now used to describe people who do weird things.
Person A: Yo check it out, I just saw this Korean guy named Siward eat some kimchi with ketchup
Person B: What the Siwon?
Person B: What the Siwon?
by keychain2 February 05, 2023
