Wheels up on grass? Oh, no.
One of my early instructors did that in a Meteor around 1947. The wheels stuck up and he was told to put it down on the grass not the concrete, as that had always been standard on the piston aircraft. By the time he stopped, he was sitting in his seat, upright, with half the nosecone in front of him and the entire rest of the jet distributed across the airfield like confetti behind him.
After that, it was always "put in down on the concrete; it's smoother"