hellziggy

There is a girl here at work who is single and has been out in the wonderful world of first dates.
Each new guy she meets ends up making her add a new question to the list of questions to screen out the ones that just won't work. The one she has been talking to lately (but hasn't met yet) has passed all the questions so far so we are trying to figure out what "the deal breaker" question that she just hasn't thought of yet is.
Some examples of previous deal breakers that have been added are: "Are you hygenically inclined?" and "Have you ever been in prison for crystal meth?"

So, oh LJ brain of mine. What are some questions she needs to ask this boy?