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.

I decapitated the Dornish SNAKE.
Game of Thrones Season 7, Episode 3

...you should know that I've moved
my money out of the SNAKE can.
The Big Bang Theory Season 2, Episode 14

How can you be quick as a SNAKE...
Game of Thrones Season 1, Episode 6

I flogged the one-eyed SNAKE.
Game of Thrones Season 1, Episode 6

It's a SNAKE.
A terrifying SNAKE.
The Big Bang Theory Season 5, Episode 7