Years ago a freighter was headed from the Midwest to the far Southwest in the early AM dark, on top of an undercast. CA snoring since the Big Muddy, and the FO is bored. Uses the fuel qty test button to drive the qty down to about 500 lbs/side, pulls the breakers to "freeze" them there. Sets the panel clocks ahead 2.5 hours. Gets a vector from the center and puts both navs on an unuseable frq. Puts the active com fq on Comm 2, which is selected "off" on the CA side. Slides his seat back, and pretends to be asleep. Drops the clipboard on the floor-LOUDLY. Plays dead while the CA wakes up to believe himself out over the Pacific, out of gas , with sleeping FO. Nearly gets a hernia from trying not to laugh out loud as the CA freaks out.