Backhoe fade is when a backhoe machine, which is a big digging machine used in construction, starts to have trouble stopping or slowing down. It's like when you ride your bike down a hill really fast and the brakes start to feel like they're not working as well as they normally do.
This happens because the brake pads on the backhoe get really hot when they're being used a lot, and when they get too hot they can't do their job properly anymore. It's kind of like when you touch something really hot and your fingers start to hurt and you can't use them properly for a little while.
When backhoe fade happens, it can be really dangerous because the operator might not be able to slow down or stop the machine when they need to. So it's important to make sure the backhoe's brakes are in good condition and not being overused for too long.