“A guy walks into a bar…” is a typical form of what has been called the “bar joke.” “A Roman walks into a bar and orders a Martinus…” is one such popular bar joke. The bartender asks if he really wants a “Martini,” but the Roman—using correct Latin—replies, “If I wanted a double, I would have asked for it.”
   
The joke originated with the Canadian comedy duo of Wayne and Shuster, who performed the sketch Rinse the Blood Off My Toga on television’s The Ed Sullivan Show in May 1958:
 
FLAVIUS: Hi, Claud. What’s new?
CLAUDIUS: Nothin much. What’ll ya have?
FLAVIUS: Give me a Martinus.
CLAUDIUS: Don’t you mean a “Mar-ti-NI”?
FLAVIUS: If I want two, I’ll ask for it.
 
“A Roman walks into a bar, holds up two fingers and says, ‘Five beers, please!’” is another bar joke involving a Roman.
   
         
Wikipedia: Wayne and Shuster
Wayne and Shuster were a Canadian comedy duo formed by Johnny Wayne and Frank Shuster. They were active professionally from the early 1940s until the late 1980s.
 
Wayne (born Louis Weingarten, May 28, 1918 – July 18, 1990) and Shuster (September 5, 1916 – January 13, 2002) were well known in Canada, and were Ed Sullivan’s most frequently recurring guests, appearing a record 67 times on his show.
 
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PLANET PROCTOR 2002-22
benway
8/20/02
(...)
A guy goes into a bar and orders a martinus. “You mean martini”,  says the bartender. “No”, says the guy,  “If I wanted two, I’d have said so.” -Ivan again
 
DIF-DBS Memorials
TUESDAY, NOVEMBER 15, 2005
Wayne and Shuster
Johnny Wayne and Frank Shuster: CBC Radio and television comediennes, known to Canadian and American audiences for their 67 appearances on “The Ed Sullivan Show” on CBS television, and having their own long running series on CBC television in Canada.
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One of my favorite lines from W&S is from “Rinse the Blood of my Toga”, where the hero, Flavius Maximus, the famous Private Roman Eye goes into a bar and orders a “Martinus”. The bartender asks him, “Don’t you mean “Martini?” Flavius shoots back “If I wanted two, I’d ask for them!”
An interesting note is Frank’s cousin, Joe Shuster, is the co-creator of Superman!!
posted by Celestial2920 @ 1:24 PM
 
YouTube
Rinse the Blood Off My Toga
kiwimush
Uploaded on Mar 15, 2007
a comedy derived from Julius Caesar
(The joke is at 4:46.—ed.)
COMMENTS
bryce holcomb Shared on Google+ · 3 months ago
“Gimme a martinus.”
“You mean a martini.”
“If I want two, I’ll ask for them.”
 
Twitter
David Braziel
‏@Braziel
A Roman walks into a bar and orders a Martinus. Barman says: “You mean Martini?” Roman says: “If I want a double I’ll ask for one”
8:01 AM - 27 Nov 2009
 
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Re: [GUDetroit] Digest for .(JavaScript must be enabled to view this email address) - 11 Messages in 1 Topic
Holly White
7/7/11
(...)
On Thu, Jul 7, 2011 at 1:41 PM, Steve (S.) Kirsch

wrote:
A Roman walks into a bar and orders a martinus.  “Don’t you mean martini?” asks the barkeep.  The Roman says “No, I just want one”.
 
Half Moon Bay (CA) Review
Raising the bar on jokes
Posted: Wednesday, December 7, 2011 1:02 pm
Louie Castoria
(...)
A Roman walks into a bar and orders a martinus. The bartender asks, “You mean a martini, don’t you?” “Look,” says the Roman, “if I wanted a double I’d ask for it.”
 
Facebook
History At Our House
June 29, 2013 ·
A Roman walks into a bar and orders a martinus.
“You mean a martini?” the bartender asks.
The Roman replies, “If I wanted a double, I would’ve asked for it!”
 
BuzzFeed
The 24 Greatest, Nerdiest Jokes Ever Told
Supercollider? I hardly even know her!
posted on Jun. 16, 2014, at 4:25 p.m.
Tanner Greenring
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12. Later, that same Roman goes to the bar and orders a Martinus.
“YOU MEAN A MARTINI?” THE BARTENDER ASKS.
THE ROMAN SAYS, “IF I WANTED A DOUBLE, I’D HAVE ASKED FOR IT.”
   
Rant Lifestyle
13 Highbrow Jokes For Geeks
Posted July 7, 2014 by Nathaniel Bellin
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3. A Roman legionnaire walks into a bar and orders a martinus. After a moment, the confused bartender replies, “You mean a martini?”
 
“Listen, bub,” the Roman replies, “if I wanted a double, I would have asked for it!”