You want to do what? Outrageous, and otherwise interesting player requests.

[Dragonblade]

Clearly someone who is unaware:

1. of how big a salmon is (3'-5' in length)
2. of how big a tank to carry a salmon would have to be
3. How much that much water would actually weigh (@ 62 pounds per cubic foot)
4. salmon are famed for their penchant for jumping out of the water...

Yep. This is why the whole group did a collective face palm.

 

[Desdichado]

In a serious military fantasy campaign, there was a guy who proposed a character build using a homebrew cross-dresser character class. He was denied.

In my first Freeport game, I had a character who played an awakened gorilla named Queequeg.

I once had two characters who had a shared backstory; one was a hobgoblin who was nearly killed by the other character in a raid when she discovered that she was a barbarian. The barbarian didn't recognize the hobgoblin, and he was careful to hide his massive scar from her until they finally gave that away... while in flagrante delicto.

I had a character who was a seriously psychotic Don Juan womanizer. He ended up getting turned into Fast Times era Phoebe Cates for a while. Granted, the player didn't ask for that to happen, so I guess it wasn't so much an outrageous request, as just something outrageous that happened to him.

I had a player buy a slave for anthropomancy once. The rest of the group weren't really quite down with that, so he did it at night while they were sleeping.

 

[kitsune9]

I had a player back in 2nd ed days where he wanted to play monsters out of the MM. That's about as weird as the requests got. I had another player who thought playing an evil alignment with a group of good clerics and paladins would be cool. He kept asking me for allowing him to switch his alignment.

 

[Halivar]

I wanted to play an awakened monkey ninja, but it was shot down.

Repeatedly.

One day.... one day....

 

[Living Legend]

I had a player in a Rifts based vampire campaign ask it the broken down cars they were hiding behind had radiators still in them so he could bless the water and use it against the vampires.

I had a player who's 1st level (2nd ed d&d) thief had lost all his equipment ask if he could take a burlap sack and catch several cats. The next fight we got in the shook up the bag of cats and threw them at a guy, backstabbing him with his own dagger while hetried to throw off the cats.

 

[Rhenny]

Just a few weeks ago in my online maptool game, the party encountered an Orcus cult Hobgoblin necromancer leading some undead against them. The necromancer had an Orcus Skull Tattoo on his neck. After the party killed all the foes, the Dragonborn Cleric of Pelor flayed the necromancer's skin and cut off the tattoo, bloody skin and all. That grossed out the party.

In the next session, the party killed three more Orcus cultists. Again, the Cleric cut off the tattoos so that everyone in the party could have one. His idea was to save them so that if they needed to impersonate an Orcus Cultist, they could each slap one on (like Hannibal Lechter - Silence of the Lambs).

Gross, but clever.

 

[Wiseblood]

"I grapple the naked man."

A half-orc barbarian I was adveturing with. Opens a door in a dungeon and upon seeing a deepspawn and a naked "human". True story.