My older sister hosted a Japanese exchange student when I was in high school. I learned a few words, but he was a regular teenager who barely knew English. We did crush a bucket of chocolate chip cookies in one weekend camping trip.
After he left, I found out his parents forced him into the exchange program so they could get a break. He seemed alright to me.
If you like malapropisms, you’ll love Martha Plimpton’s character in Raising Hope, Virginia. Procrasturbate and vaginacologist are a couple favorites.
Bonus: her middle name is Slims. Virginia Slims Chance