Sailboat fuel 

Another word for air. Smart ass remark truckers often give to cops.

Cop: What are you hauling?
Trucker: Sailboat fuel
Cop: Let's have a look

Sailboat fuel by zipp06 December 7, 2010

Sailboat fuel 

If you own a sailboat, it's the wind in your sails.

Yea were gonna head out today, hurricane Wendy left us with plenty of sailboat fuel.

Sailboat fuel by Solid Mantis December 14, 2016