I have not had a fuellie in the cockpit (where the gauges are) in 25 years. Maybe you guys have fuel gauges in the outside fuel panel?
This kind of story would be EASILY checked by checking the departure fuel and the flight time etc...as we all know.
Sounds like duck, looks like a duck, smells like a duck....it just might be a ...........
.....uhh...are you a pilot?? You're definitely not a 737 driver!! Maybe you're just a TROLL