Woke up on a very comfortable pallet in the back of a MC-130E and discovered the Load, "Spoon", had tied me down by weaving 780 cord over every appendage like a spider web. I couldn't move. To top it all off, he asked Eng to give some heat in the back as I was directly under one of the vents near the wing box. As I tried to get out everyone came back to take a look at Gulliver, the AMT.
Later, I took "Spoon's" helmet bag and duct-taped it into a small ball which we played catch with for the remainder of the flight. He didn't discover his helmet bag missing until after landing; had no idea it was his bag we were playing catch with until I told him later.
Another flight overseas to do a Fulton demo in Korea we stopped at Yokota on the way back. The load bought a very nice 15 speed bicycle at the BX and hung it upside down from the tires by the ramp and door. Before take-off I let the air out of the bike's tires so they wouldn't pop during flight (I figured 65 psi might be a bit much at altitude). But my evil side make me keep it a secret. About halfway in the ascent I emptied my bag lunch and out of sight blew the bag up and popped it very loudly. I made sure I was positioned close to the bike hanging upside-down in the back. Eng came running back around the pallet asking, "WHAT THE HELL WAS THAT". I got up and squeezed the bike tires and said, "tires blew out at altitude, guess you'll have to buy new tubes when you get home." He looked so sad pushing his bike off the ramp when we RTB.
I have some more "back end stories"