You can base your answer on anything. (Looks, size, caliber, design, practical use, concept, even just unmerited dislike.) Feel free to post pictures of the silly thing too.
I'm going to have to go with the 28 gauge rifle-barreled Judge. Would like to see how that thing patterns! The gun doesn't look all that bad, just can't figure out what its for
High Point makes some pretty "goofy looking" guns.....just commenting on looks, not performance.
Any pistol sold with a bayonet attached to it.
And, then there's the goofiest gun of all: The GRAD Knife gun - It's a knife with a hidden .22 revolver in the handle, and if anyone knows where I can get one, pleas PM me!
Dardick, the embodiment of an answer in search of a question. Honorable mentions include the Gyrojet rocket pistol, Mateba, and Webley-Fosbury (though the last one is still kind of retro-cool). The award for worst combat-handgun ever, on the other hand, goes to the Nambu Type 94: a gun that is potentially more dangerous to the user than his enemy.