If I had a Monty Python-inspired username, it just might be....

Man!

You Could Call Me Dennis
Anarcho-Syndicalist
Logician’s Wife
Rancid Pakistani
Harvey the Wonder Llama
Gielgud’s Lear
Splitter!

See the OP, please.

**Anthrax Ripple
**

Poin-ted Stick?

Her Majesty The Queen

Arthur Crackpot And All His Subsidiaries, Ltd.

Chief Running Elk

Ring Kichard the Thrid

A Scotsman on a Horse

The Cheese Who Shot Liberty Valance

Skinny Christ

Or, alternatively, Michaelangelo and the Pope

I think Mr. Barnard, room 12 is a fine idea for a user name.

Or Mary Biggles, If I’m Dressed As My Wife

False Nose

Ling Your Berr

Not Even A Proper Nose

Ralph the Wonder Llama

Sir Not-Appearing-In-This-Film

Please see the OP.

Very Famous Historian

Liver Donors, Inc.

(A quick Googling shows that it is actually used as a username in some parts of the Interwebs.)

Mary Queen of Scots