Most Outrageous Weapons

[Evilhalfling]

The Sword of Normality - an intelligent sword that looked like a cruedly forged iron bar with a bad hilt. It's special powers were +5 ranks Profession Innkeeper, +5 Profession Farmer.
+ Bane, far realm & detect far realm 60'. It wanted its owner to retire and become a commoner, it used empathy to make inns feel comfortable and adventuring tasks (camping, puttin on armor etc) more tedious.

Sword of Choosing -
given by the gods to a PC with 18 str, Dx, & Cn. Crafted by Kervan? the Lord of Swords (GH quasi deity?) to encourage the PC to give up thievery and remain a fighter. It could shoot lighting, at the cost of non-magical healing damage. It failed utterly to inspire self-sacrifice or courage, and the special power was used once-ish. Meanwhile the character burned out a wand of wonder. ah. middle school.

I made up a set of "artifact" daggers - which were +2 and had seldomly used powers.

 

[William Ronald]

It wasn't me, but I did it too...in the Abyss!

Well, I did not do this. However, I am trying to recall if the party was in the Abyss as well.

 

[Bran Blackbyrd]

I had a fighter/cleric of Bacchus and my DM gave him a +3 triple flail that produced a Wand of Wonder type effect whenever he made a critical hit. All the effects were changed to be somehow related to wine or Bacchus.

Whenever the party encountered a group of enemies that had arranged themselves in a relatively straight row or column the player with the wizard would say he wanted to summon a storm giant... sideways.
It became a running gag, but he was never allowed to do it.

 

[Enamel_32]

In a short campaign I played in, the DM allowed one of our PCs, a wandering pelt merchant, to have a bow of wonder. It worked like a rod of wonder, and sort of like the imbue arrow ability for the arcane archer. The battles were all very unique because of it.

 

[Richards]

The latest freebie Portable Hole Full of Beer PDF has two dozen "Magic WeaPuns" I created, along the lines of a cutlass supreme, hot rod, ice sickle, turn pike, flag staff, and food chain. Each one has powers based on its "pun" name, but each also has an alternate, non-goofy name so it can be used as a perfectly sensible magic weapon.

Johnathan

 

[Mark CMG]

This free one here?

 

[Roudi]

But surely, the most outrageous weapon I've ever seen is the rat-flail.

While not a weapon per se, a player of mine once tried to have fun with technicalities. They were exploring a dark sewer and required light; he realized that his daylight spell needed to be cast on an object. He chose to cast it on his codpiece.

Brightest. Codpiece. Ever.

 

[was]

I once had a half-orc fighter gain a cursed vorpal greatsword. Ended up cutting my own leg off.

 

[Fieari]

I was always fond of the +5 Humanoid-Bane Shocking Thundering Keen Vorpal Scimitar of Excessively Eager Great Cleaving that FORCES the user to cleave after a kill. If there are no valid enemy targets, a friendly one will have to do. If there are no valid targets whatsoever, then you attack yourself.

 

[Bront]

My favorite odd weapon was the +1 Ghost Touch Bastard Sword of Throwing and Returning. It was an... interesting item.