An Italian walks into a bar...
An Italian walks into a bar and orders a "martino".
"Don't you mean a martini?" asks the bartender.
The Italian replies, "If I wanted a double, I'd ask for it."
Sorry-- the original was "A Roman", with "martinus", but it made more sense to be Italian. I ignored the article and left it as A when I copied it.
Presumably, if he actually wanted a drink, he'd ask for that as well. After all, he is Italian, he knows that "Martini" in "Martini & Rossi" originates in a plural referring to a family; that it's much like one might talk about the Smiths or the Jones's, except that it has become the standard form of such surnames in Italian; that "Martini" is just an abbreviation of a brand name, and that the brand is not called "Martino & Rossi". Considering the bartender walked right into it, I assume he had stood behind the bar all evening and needed the exercise.