The exact reason why these kanji are used is unclear — but there are some possible origin stories listed in the article below.
Search for art you'll love! Come take Japanese lessons online with us! Do you know what it means? In the video, the TikToker is playing the mobile karaoke game Smule with TikToker kiszuko1.
However, the usage actually varies by location a bit.
Unless this is someone above you that you are really close to, just avoid it.
This includes bosses, supervisors, teachers, your father-in-law, etc.
Some TikTokers noted an quality in the way the word "baka" is spoken in the audio.