Standard procedure - not that Dean has the advantage of saying the routine test has worked 100% of the time, it works often enough and is simple enough to be worth a shot. He flaps a hand dismissively at the question.

"Sorry, hiccup. Alright - back to the beginning. Where were you?" Dean doesn't notice he's slightly raised both eyebrows in his best encouraging expression, eyes fixed on Titus's; Sam is normally better at this, but Dean is plenty seasoned himself.