The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

- Potato clock. Do POTATO clock.
- What's that?
The Big Bang Theory Season 6, Episode 22

couldn't power a POTATO clock.
The Big Bang Theory Season 10, Episode 12

Hey, did you have
any of that POTATO salad?
Breaking Bad Season 5, Episode 9

Nothing beats a lap dance
and a baked POTATO bar, huh?
The Big Bang Theory Season 12, Episode 21

- Potato clock. Do POTATO clock.
- What's that?
The Big Bang Theory Season 6, Episode 22