In which country are honorific suffixes and prefixes used when referring to others in a conversation?

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To some degree this happens in the Thai language as well. My daughter's best friend is from Thailand and when we first met her she always called my husband and I Mummy and daddy, because we were older than her, Now, 20 years later, she knows us very well, so she calls us mum and dad 🥰 She's 52 years old. By the way, Portuguese, as I'm sure everyone knows, is a nationality and a language, not a country.