OK, I can't resist it. (After all this crap weather preventing flying, I'm spending too many idle moments on PPruNE)
We have two Faulke motor gliders at our gliding club, used for teaching glider pilots how to choose a landout field, and how to set up a circuit.....this requires the altimeter NOT to be considered, as you would not know exactly the altitude of the field chosen.
One of our senior instructors finally persuaded his lady to come flying with him in the Falke....perfectly safe, he assured her.
So they pushed it out of the hangar, he helped her aboard, strapped her in, reassurance emphasized in the preflight briefing. With a calm masterful air he climbed in the other side, strapped himself in. They taxied to the end of 18, which is a nice long paved bit of runway that gives the falke plenty of room for takeoff; the Falke is a bit of a groundhugger and likes to have a good long run to acquire climbaway.
Engine running just fine, he turned round completely to make sure no traffic to affect them, straightened up, and confidently moved the throttle forward to full power. The Falke left the ground OK, and climbed to about 10 feet before the engine quit completely. Talk about EFATO! Fortunately there was just enough room straight ahead to land and stop before arriving in the clubhouse.....
Seems the last guy who flew it had TURNED OFF THE FUEL! Which is not usually done, and the skirts of his lady had hidden the valve, which is right beside the passenger's seat.....
She was not amused.