I actually talk to myself a bit at times. Not really conversations, just kind of working through chains of reasoning aloud, helps kind of keep me centered on whatever I'm working through when I'm at the point where my thoughts are starting to race (I'm terrible about trying to juggle a bunch of shit in a short period of time). Or chiding myself. I do that a lot, usually kind of under my breath. I do occasionally read my posts on the Internet aloud to myself to help me decide whether it's coming across in the fashion I want it to (or to make sure my diction is correct).Had a dude I worked with a long time ago that would talk to himself in the office I worked at. Full blown conversations with himself. Didn't care if other people were present or not. Would go to the bathroom and tell himself jokes and laugh at them. Would wipe bloody boogers on the walls in the bathroom.
Got fired because he took a shit on the bathroom floor.
Thing is, moment someone notices I'm doing this and mentions as much I pretty much clam right the fuck up. This tends to result in more exceptional shit happening.