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.

All right, now you, ski BUM.
Come on. Give with the dollar.
Breaking Bad Season 2, Episode 8

A finger in the BUM?
Game of Thrones Season 7, Episode 3

You wanted to be
a beach BUM so badly.
Breaking Bad Season 5, Episode 8