I don't get YT ads anymore, but when I did, there was (used to be?) this ad for Amazon set to the song Ring My Bell. It wasn't the K-pop song, it was a pop hit from like the '70s. Anyway, it was a remix of that song, and they made the singer's voice sound like they'd inhaled too much helium... it was so funny! I couldn't find the actual video, but here's a TV version that plays the song I'm describing:
But nowadays, it's any ad I can immediately click out of. I don't find banner ads annoying as long as it's not invasive.