Ha, reminds me of today, very un-mechanical coworker came in the office and said, "damn I think my brakes are done, will need to buy a new car sooner than I thought, the light came on and it barely stopped in the lot." I said "bud, lets go out at lunch and check you master cylinder" He asked "What's that?" so out we go at 12 and I pop the hood on his very old and well loved Mazda 3 GT 6 speed and low and behold his master is bone dry. I drive him the 3 min away to the auto parts store and we get a big ol bottle of Dot3 and fill it, pump brakes, fill it and a few fills later brakes are solid again. I told him he likely has a slow leak and to check the fluid but he's still buying a new car, the 3 won't pass safety next month LOL. He said in all the years I've owned a car I've never put brake fluid in one or even knew it was a thing. he said he thought the light was to tell him the pads were done.That reminds me of the time the Stepson kept adding oil to an 85 Olds Cutlass wagon without checking the dipstick because the oil light came on. It overflowed a 15 quart oil pan when I drained it. Not sure how the engine even ran with that much oil in it. Not even sure how many gallons he had put in. The oil sending unit had gone bad.