In the heat of a battle that could claim your life and the lives of dozens of you friends/allies, that sort of dialogue exchange is not going to happen.
So... this was your first hollywood movie ever?
Blizzard Battletag: UnderDog#21677
Shepard: "Wrex! Do we have mawsign?"
Wrex: "Shepard, we have mawsign the likes of which even Reapers have never seen!"