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.

And feel free to tell your guest
that the Myanmar CATFISH
The Big Bang Theory Season 9, Episode 9

Oh, forget what I said
about the Myanmar CATFISH.
The Big Bang Theory Season 9, Episode 9

It's the whiskers of the CATFISH
And the walrus
The Big Bang Theory Season 8, Episode 21