Where DO these silly sayings come from?

Bignuf Bignuf
Anyone know the origin of "FLY BY THE SEAT OF YOUR PANTS"?

Any other "odd" sayings you can think of, without obvious "reason" us for saying it?
11/09/2011
  • Save 25% when buying 2 products from Toynary!
  • Pleasure To Women! Save 50% on Toys for Women
  • Save $15 on Smartballs Uno+Duo kit
  • Get A Free Towel With Luxury Line of Vibrators from Leaf!
  • Get A Free Bag Holder with Fun Factory toys!
  • 1
  • 2
  • 3
  • 4
  • 5
All promotions
Elnoa Elnoa
As for that phrase, I checked Yahoo: link
11/10/2011
Total posts: 2
Unique posters: 2