Sometimes in conversation, I've came out with "So.. Would you class yourself as a loner, or just shy?", trying to trait my friends. My best friend has the following traits: Loner, Genius, Insane, Neurotic, and Shy.. And his LTW is to become the Emperor of Evil. He's a fun guy.
My other best friend is Shy, Charismatic, Clumsy, Bookworm and has a Good Sense of Humour but his LTW isn't decided yet. (Not because I don't know him well, he just doesn't know what he wants yet.
) I'm good at deciding people's traits, they all agree with me when I tell them these are what I think their traits are.
..They probably only agree with me so I can stop talking about sims, though.