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.

Breath sounds bilaterally.
Femur's like a wet bag of GRAVEL.
Breaking Bad Season 3, Episode 8

I'm fine, but, oy,
did Sam Harpootian eat GRAVEL.
The Big Bang Theory Season 3, Episode 10

Hey, GRAVEL monkeys,
The Big Bang Theory Season 5, Episode 17