Japanese has a similarly maddening expression for non-native speakers: "Kekko desu." (けっこです。) For example, if you have coffee and someone asks you if you want milk and sugar... to decline, you might reply "kekko desu" -- which means "it's fine as it is." It's tough to understand when to use it correctly! Still now, after more than 10 years of learning Japanese, I have memorised a few key situations when it is correct/safe to use the expression.

I adjust my use of English to the person or group I am talking to. This is sometimes derided as "coded speech", but I think it is just common courtesy.

But sometimes the word choices of ESL speakers just sound better than proper English, and I tend to pick that up, too. For example, I still find myself saying now and then:

"I'm going to make some shoppings."

"It's time for go."