http://xkcd.com/1792/

Michael

Ah, you beat me to it!!

I died at "occasional midair sex."

A good deal of the fun in XKCD is the title text that pops up when you hover the mouse.

title="You can apply special translucent films to your windows to help keep birds/Superman from accidentally flying into them."

I don't know which was funnier, the 'occasional midair sex' or the 'mating behaviour often observed by a hidden David Attenborough'

I think this may have been the funniest riff on the cliche I have ever seen. Thanks for sharing this, Michael.

I'm not sure how planes can have mid-air sex. (Yes, people on the planes can, but not the planes themselves.) If planes have mid-air sex, does that sometimes result in little baby gliders?

Joy,
Lynn

And there's something similar in the first episode of Powerless...