a turd of a toy

You know, I had always thought that the term "ass rocket" was some kind of scatological slang. Then I saw U.S. patent 6,055,910, and I realized the horrible truth:

To operate the assembly, the operator places the inlet tube with its valve open adjacent his anal region from which a colonic gas is discharged. The piston is then withdrawn to a degree producing a negative pressure to inhale the gas into the combustion chamber to intermix with the air therein to create a combustible mixture. The ignitor is then activated to explode the mixture in the chamber and fire the missile into space.

"Ass rocket". OK, I got it. This is one of those 'ignorance is bliss' situations.