im a very nice guy in real life, although I generally keep to myself.
Once I have met someone I will say hello and chat a little with them and if i like them i might converse for a while.
if i dont know you, or have very limited knowledge of you, i probably wont say anything to you.
i always try to spread positive thoughts and ideas, and avoid negative comments and negative people. i will not try to give anyone a "hard time" for the fun of it, unless i like the person and they have done the same to me before.
when im friends with someone, or interested in them, then i can be very engaging, thoughtful, humorous, witty..etc