system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Why does batman leave his mouth exposed and why does no one target it?
gpt
It's a risk, but he leaves his mouth exposed in case he needs to assure someone (usually a kid) that he's just a guy in a costume and not a giant bat like some urban legends say. 

Also makes it easier to breathe, speak, and chow down on bat-energy-bars.