A man makes his first solo parachute-dive. He was told by the instructor, to pull his chord at 1500 meters. If things did not work, he had to pull the other chord for hir spare. Well, he jumped from the plane at 2000 meters. 1800, 1600, 1500 PULL! Nothing happened. 1400, 1200, 1000 meters: PULL!! Nothing happened again! What to do? Panic!! Ahhhhh.... he saw a man coming up towards him! Almost near him, he screemed: Hey you, know anything about chutes?
The man schouted back, No, no, but what do you know about gas-stoves.....