An exclamation often said by pilots when flying in heavy rain, fog or cloud. Usually to their co-pilot, but not to air traffic controll on the radio. Usually said when the other pilot claims to know where the landing runway is, while the exclaimant has no idea. Is an indicator that the person saying the phrase is both lost, and can't see anything comprehensable out the window
Copilot: Runway is off to the right sir
Pilot: Where? I can't see shit!