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.

Circle, circle, DOT, DOT,
now you have a cootie shot.
The Big Bang Theory Season 2, Episode 10

Circle, circle, DOT, DOT,
now you have a cootie shot.
The Big Bang Theory Season 2, Episode 10

♪ A DOT without the com
The Big Bang Theory Season 7, Episode 6

Well, you really wanna DOT the I's...
The Big Bang Theory Season 4, Episode 4