A Roman walks into a bar and asks for a martinus. "You mean martini?" the bartender asks. The Roman replies, "Slow down there! I'll let you know when I want more."
It's funny because: In Latin, which the Romans spoke, the suffix "us" is singular, while the suffix "i" is plural. So the Roman thinks that martini implies he's ordering more than one! Silly Roman.
It's on this list because: Latin needs all the help it can get staying alive.