Like I speak English and Portuguese, learning Dutch, and (not doing it for the sake of a primarily English-speaking community) but I will often switch between the two, like saying “Bom dia/Oi” to someone or “Tchau!”
I may also falar assim and I don’t do it to show off, it’s just comfortable pra mim. I will mix in a few português words. (Not exactly like this but YKWIM, maybe).
Quite common in India to speak a mix of English and another language. My partner and I mostly speak English, but some sentences just happen in Hindi.
They do that also in Bollywood movies! It was unexpected the first time I hear that!