on some what related:
Immigrant parents (first gen) mostly 'think'/their internal monologue in their own mother tongue/language. The kids mostly born in the US like the rest of the "English" native speakers have their internal thinking/monologue (brain speak if you will) is in English.
This adds to an interesting conversation, sharing nuances, inside jokes etc.
This adds to an interesting conversation, sharing nuances, inside jokes etc.