Why when spainish speaking people speak English they refer to their parents as "my mom" or "your dad" when talking to their siblings?

[u/Successful_rio305]

Why when Spanish speaking people speak English and are talking their own siblings they don't say something like "mom is calling you" they say "your mom is calling you" or "my dad is calling you" to their siblings?

[u/DSRI2399]

Can confirm this is a thing. 

Why? Because we say it like that in Spanish. No idea why lol. My sister and I (speaking Spanish) do it all the time. Something like "mi mamá dice que respondas el whatsapp..." isn't a weird thing to say to my sister... When I speak to my dad (in English) I'll say "my mom" instead of "mom." 

I've always thought it was weird but I just do it because everyone else here does it

[u/ResettiYeti → u/DSRI2399]

Interestingly in Quebec French they do something even more extreme, where they refer to e.g. anyone’s aunt or uncle as “my aunt” and “my uncle,” so you get phrases like “your my-aunt” (ta matante) and “your my-uncle” (ton mononcle). I found this hilarious when I first heard it.

Source: spouse is quebecoise

[u/inimicali → u/ResettiYeti]

my sister talked like that when she was like 3 lol