My friends tell me I am the most random person they have ever known.
Like when I was hungry once and went to this sandwich shop which was still closed and my friends just went with me (they didn't want to buy anything themselves) and I just ran off yelling: I am thirsty, going to get something from the supermarket, see you in a bit! (because I decided/felt on that exact moment I was thirsty)
And they were left there with the owner, not buying anything. (okay I admit that was random)
I always speak what's on my mind and come up with the most random conversation starters etc.
I also say exactly the right jokes at the right times, like when we were watching Law Abiding Citizen and 5 people got killed in the movie, and then I yelled: Penta kill! (LoL players know)
Such things and many many more random actions throughout my life.
So are you random? Unpredictable? etC?