Imagine a situation where you have been invited for an interview. You are in the waiting area with about 15 minutes to compose yourself, and only then do you realise you have time to attend to your pounding headache. From your bag, you take and swallow painkillers, then wait for the headache to subside.
Shortly after, the pretty office administrator comes your way with a gracious smile to usher you in for the interview. Suddenly, your stomach starts rumbling and it appears your intestines are trying to avert some explosions. You manage only a weak 'hi' before running off to save yourself.