On Tue, 26 May 2009 13:46:36 +0000, good grief wrote:

Best I can tell he was humorously alluding to the fact that skydivers
cannot go back up and that "climbing" would be some sort of altitude
violation (or at the very least a violation of the laws of physics.) ;-)
Of course I could be wrong......

You were right. Oh, well; *I* thought it pretty funny.

- Andrew