Listen to The Karate weirdo - Why do people say Merry Christmas before it happens? (Introduction) online. The Karate weirdo - Why do people say Merry Christmas before it happens? (Introduction) is an English language song and is sung by Andreu Jacob. The Karate weirdo - Why do people say Merry Christmas before it happens? (Introduction), from the album The Karate Weirdo (Original Soundtrack), was released in the year 2024. The duration of the song is 1:16. Download English songs online from JioSaavn.