false pausitive
Refers to when someone temporarily stops his current activities to allow for a common bodily-function (burp, fart, sneeze, etc.), but then said "eruption" never ends up occurring.
My co-worker claims to have a tickly nasal-canal and that's why he has to stop working so many times and just stand/sit motionless for a good while with his hand covering his nose/mouth as a precaution against "messy" sneezing, but he very seldom actually does "let fly", and so it looks like just false pausitives to me --- I think he merely wants to take lots of breaks and get out of working steadily like the rest of us!