I am extremely triggered by a friend's "low HP" calls, as he tends to call it low every time the enemy reduces his hp by a little.
Examples of these would be :
Pistol round dealing 44 damage
Gun rounds dealing 80 damage (2 vandal shots)

Calling the remaining enemy(or enemies) low, tends to make the rest of the team play more aggressively, which is a huge risk when they aren't actually low.

So the question is what HP is considered low? How much HP should the enemy have, or how much damage should I deal before a Low HP callout is to be called.