I would most likely freeze and think its a dream and then i would give him a hug. Plus a kiss on cheek if that would be ok. After he left i would scream my head off and call all of my Marafiki and tell them what happened
I wouldn't scream because he's not an alien,he's a human being. Would I be excited? Absolutely! I would chill with him and get his number so we can keep in touch.