karmanaut

A person who flew above the karman line (83 or 100km) in a privately owned rocket or spaceplane.

Rick from music: Yo, have you seen the news from the other day?
A human: No, what was it?
Rick from music: Ah, nothing really. Something about some Jeff becoming a karmanaut.
A human: Nothing special, I suppose.
Rick from music: It says here that he owns Amazon!

A human: Oh, that Jeff!