We deployed some Hueys via C-130 to NZ for an exercise, and with us was an Army Ground Liaison Officer (GLOWORM) who brought his khaki-coloured Postie bike. The bike was almost empty of fuel, it just had enough for Major Malfunction to ride it down to the fuel dump, where he ordered the Corporal to fill it up.
"But..Sir..."
"NO BUTS CORPORAL! Fill it up!"
So, he filled it up, with diesel.
Mal got about 50 yards before the poor little thing wheezed and stopped. Mal was raging as he pushed it back to our lines and got his Captain to sort it out. Much muffled guffaws from the aircrews.