My husband always says I have "crazy eyes" when I am manic. I suppose what your ex is experiencing could be that? I'm not her so I can't tell but I'm trying to give her the benefit of the doubt.

I have done "drunken" like things over the years without touching alcohol. For instance, in high school I once stood up in the middle of my class and started singing "I've got friends in low places." Thankfully all of my teachers knew I was mentally ill so they put up with a lot of ****. Everyone in the class started singing too so it was actually hilarious. On the other end, I would become entirely paranoid and have to settle underneath my teacher's desk, not being touched until someone came to pick me up.