It is fatal and unerringly effective in shattering your focus. What? The large piece of black coloured food, a remnant of a quickly digested meal. Maybe an olive? The result? One's eye is continually drawn to this one spot, this singular place in space and time. The speech of the speaker is lost to some indistinct background noise, a mere babble as everything focuses on an determining just what former piece of food is embedded between their teeth and gums.
''Im sorry, what were you saying?''