Somebody posted a lame version of this joke. Here is how it is suppose to go:
When Apollo Mission Astronaut Neil Armstrong first walked on the moon, he not only gave his famous "One small step for man, one giant leap for mankind," statement but followed it up with several remarks to the other astronauts and Mission Control.
Just before he re-entered the lander, however, he made the enigmatic remark, "Good luck Mr. Gorsky."
Many people at NASA thought it was a remark concerning some rival Soviet Cosmonaut.
However, upon checking, there was no Gorsky in either the Russian or American space programs. Over the years, many people questioned Armstrong as to what the "Good luck Mr. Gorsky" statement meant, but Armstrong always just smiled.
On July 5, 1995 in Tampa, Florida, while answering questions following a speech, a reporter brought up the 26-year-old question to Armstrong. This time he finally responded. Mr. Gorsky had finally died and so Neil Armstrong felt he could answer the question.
Armstrong explained, "When I was a kid, I was playing baseball with a friend in the backyard. My friend hit a fly ball that landed in the front of his neighbor's bedroom windows. My neighbors were Mr. & Mrs. Gorsky. As I leaned down to pick up the ball, I heard Mrs. Gorsky shouting at Mr. Gorsky, "Oral sex! You want oral sex?! You'll get oral sex when the kid next door walks on the moon!"