I have reinstalled New Vegas and deactivated all mods, and still have this problem with the vanilla game, so I know that it's not a mod causing it!
Basically, I have a Bug where when I walk into the Prospector Saloon, Trudy will start throwing up when she reaches her position behind the bar. Then whenever I speak to her, after I quit dialogue with her, she throws up and stumbles backwards.
I have also had this problem with the guy at Gun Runners (I haven't really explored anywhere else due to completely reinstalling the whole game to try and get rid of this bug.
I've never had it before, so was wondering if anyone knows any fixes for it? I'm also playing on the latest patch with Dead Money and Honest Hearts installed.
EDIT:
It turns out that this was caused by the newest release of E.V.E, which has now been patched...
Unfortunately, this means no puking Trudy videos for you