I used to play it like this, not as a child, but more of teenage drinking/smoking age sort of thing.

I think we focused on slightly sillier questions though, such as (as far as I can remember):
"Do they have the cold, dead eyes of a killer," and
"Do they ever start a sentence with 'I'm not racist, but...'"
mixed in with stuff like
"does it look like they've just cacked their pants?" (Soiled themselves)