I had quite a similar experience. Last thing I remember was just laughing my ass off for really no reason. Not really sure what happened, as I kind of blacked out for what seemed like hours, but people there just said I was completely in my own world and picking shit up asking who's it was. As soon as I snapped back I thought everyone I looked at I was melting/killing so I freaked out and ran out the door. Was very intense.
