Slowly turning his head towards the ogryn, Zuriel could barely believe his ears.
An ogryn was schooling a chaos space marine about the horus heresy. While calling the warmaster horse nonetheless.

This was far to fascinating to ignore, Zuriel also took note of remembering horse for the future. That was a proper useful insult.
He then proceeded to take cover.
Bolt rounds were bound to start flying any second after that one.