A Pakistan International Airlines plane flying to New York City out of Lahore, Pakistan (with a stop in Manchester, UK) was delayed two and a half hours because the pilot wanted a sandwich. According to The Nation, the plane's in-flight catering service planned on serving "lunch, peanuts, chips, and biscuits" during the lengthy flight, but sandwiches (which were recently phased out for cost purposes) were no longer a menu option.
Apparently, the pilot insisted on his sandwich order — and because "sandwiches could only be arranged by placing an order to a five-star hotel in the city" — the pilot's request caused the extensive time delay. Incidentally, the motto for PIA is "Great People to Fly With." That is, presumably, unless the pilot is hungry.