I stumbled upon this episode of the Japanese dub of King of the Hill but Boomhauer doesn't really speak quickly and his accent doesn't seem thick. I was wondering if they just abandoned the bit for this dub. https://youtu.be/9JH4YIXfNeA?si=NaEADQtkpvbw7xh5
He speaks at the end of the episode around 21:15 if you want to just listen to him talk.
by Burnerman888