Dumb inventions that got patents

IZ Reloaded sez, "Here are 6 patents filed with the US Patent and Trademark office that are some of the dumbest inventions out there. Take for example the Helmet-Mounted Pistol. It's a gun strapped to the top of a hat. You have to blow into the connected tube to shoot the gun. Can you imagine using it during war? There'll be a lot of blowing."

Airbag Undershorts (2006)
What better way to magnify the humiliation of falling on your ass than with inflatable undies? These brainy briefs feature accelerometers that detect a tumble in progress, sending compressed gas into balloonlike pockets throughout the knickers. Phew — that was almost embarrassing.

Link (Thanks, IZ Reloaded!)