Proof

Proof 123movies: comedy movie from 1980 starring Clifford Martin III and Mark Schwarz, with a viewer rating of 7.2/10. A small group of friends decide to test the courage of the most frightened guy of the team and such test involves skydiving. Pretending to be reporters doing an article about it, they meet instructor Truman Sparks at his Parachute School, a dopey guy who's willing to help and teach the terrified poor man on how to perform a jump before going to the real thing.