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.

What, are you crazy? I'm on a UNICYCLE!
The Big Bang Theory Season 10, Episode 22

Amy, look, I'm on a UNICYCLE!
The Big Bang Theory Season 10, Episode 22

What happened to learning the UNICYCLE?
The Big Bang Theory Season 10, Episode 22

How did you get from croissants
to a UNICYCLE?
The Big Bang Theory Season 10, Episode 22

...I'd be okay with brine shrimp
or the history of the UNICYCLE.
The Big Bang Theory Season 6, Episode 20