I did admire this one just because it was so bizarrely obscurely topical.

Half elf bard in the old days of the Rathe server: Cunning Linguist
And of course my alt DWF CLR named: Medicinal Purposes (I see a CLR on this server had the same bright idea)

The Tug McGroin example in the old EQ naming policy guide always made me chortlesnort too.

Oh and back in live when Halflings could be rangers we (wife and I) made companion toons:

Brambletot Chopsalot
Ivyhopper Goblinchopper

BIKE THIEF AHAHAHAHA

edit: honorable mention to Trollsroyce that's hilarious

On live I saw someone named

Ilian Gonzales

lolnecrobump

My mate played an ogre warrior called Excrementis Chewwy and he got away with it for about 2 years, then a GM came and changed it to Excre and he was forbidden a surname for the rest of his time in Norrath

One fine patch day I download the french client so I could still play.
I rolled a Froglok named Freedomfries.
That char lasted all of about an hour before I was renamed :(

This was right after the Freedom Fries in the Pentagon cafeteria thing, so it was still all over the news.

Fatcock****** is best troll name in p99 history