When your character takes a lot of damage, usually enough to put them below 25% health, they say something like “that had to hurt!” (sylvari female, human male) or “they’ll be feeling that one for days” (human female).
The trouble is that you’re the one getting trounced when the sound clips are obviously meant for someone else, be it an enemy or a person in your party.
I’m not sure if it’s a misattribution of sound files but it’s certainly weird for your character to say things in third person (unless you’re a wuaggan piwate).