"Professional Wrestler and the Big Fan" joke

A professional wrestler went to a flight school insisting he wanted to learn to fly that day. As all
the planes were currently in use, the owner agreed to instruct him on how to pilot the helicopter
solo by radio.
He took him out, showed him how to start it and gave him the basics, and sent him on him way.
After he climbed 1000 feet, he radioed in. "I'm doing great! I love it! The view is so beautiful, and
I'm starting to get the hang of this."
After 2000 feet, he radioed again, saying how easy it was becoming to fly. The instructor watched him
climb over 3000 feet, and was beginning to worry that he hadn't radioed in.
A few minutes later, he watched in horror as he crashed about half a mile away. He ran over and
pulled him from the wreckage.
When he asked what happened, he said: "I don't know! Everything was going fine, but as I got higher,
I was starting to get cold. I can't remember anything after I turned off the big fan.