You're trying to find new ideas in people. I always think to myself, what question I am least comfortable asking the person? And then I make sure I ask it early in the interview.
Anyone who claims to be good at lying is obviously bad at lying. Thus - as a writer myself - I cannot comment on whether or not writers are exceptionally good liars, because whatever I said would actually mean its complete opposite.
Even though I wanted to experience all these things I was interested in, I couldn't get them. So I had to think critically and culturally about what was available.
Anybody who says they are a good liar obviously is not, because any legitimately savvy liar would always insist they're honest about everything.