calm for some

Used as a comment on a person's nonchalant approach to things.

Razza: "I don't know how some people live like this, it's so stressful"
Gazza: "Calm for some"

Calm for some

Commenting on someone's calm behavior over something that might make most people anxious

Her: I don't know how you can sleep so late, that just stresses me out
Him: Calm for some