Weird biology in this case being that you're not human. [Or at least not totally human. He doesn't think he's being rude by stating what is plain to the eye in this moment.] Don't apologize. I've seen worse cases. You get used to it after a while.

[He himself has definitely had those moments, though mostly when he was seventeen and drinking more than he ever logically should have.]

You've been working to clear out the zombies, right? Let's team up and get the job done faster. There's no telling how many there are in this moment.