Weird or unusual sounds/words in kpop songs ar…

Weird or unusual sounds/words in kpop songs are something that needs a lot of time for me to get used to. Examples are BigBang’s Boom-shakalaka, G-Idle’s Fufufu (in the corus of Hann (Alone)), 2NE1’s Pom-ratatata, NCT Dream’s Yabba-labba-heeyah, etc. They always seem to come out of nowhere and add nothing to the song besides random noises over the instrumental. Then again that’s the same with Lalala‘s or Nanana’s but they’re much more common so I’m already used to hearing those.