It is spring now, and the flowers are starting to bloom also bringing sleeping insects awake. They are not building me a house they are trying to eat it. 
So why call them carpenter ants? What’s your favorite misnomer’s?
Well, there’s always the old English Horn. Neither a brass horn, nor English in origin.
And I still don’t buy “rest” room. I couldn’t think of a public place I want to get out of quicker. Nothin relaxin except the body parts, but even then, I am in a hurry. That’s not resting.. But old polite euphemisms bein’ what they are and all…
Microsoft Works!
Modern Art
Decaf Coffee (Call it what you will, if there’s no caffeine in it, it ain’t coffee.)
Yes, well there are also carpenter bees. That’s what we have. They should be called Makita Drill Bees.
At the moment my problem is with an insurance company. I’m thinking they really ought to be billed as Screw you or at least give you an enormous headache policies.
Guinea Pigs. If they’re not from Guinea, and they’re not a pig… then, why? 
Grape Nuts
…are oxymorons rather than misnomers.
http://en.wikipedia.org/wiki/Oxymoron
http://en.wikipedia.org/wiki/Misnomer
Website.
Driveways (where we park) and parkways (where we drive).
Hermit crabs are highly social creatures.
When I was a kid, toilet water was all the rage with the girls. I thought that was very, very strange. And my toilet didn’t smell like that at all.
Guinea pigs were kept in and around the house for a quick meal.
My favourite in this thread is the title. Its in the possesive. 
djm
Customer Service. 
They’re from South America, right? Guyana and French Guyana. I have a Quechua friend from Peru who says they’re a common food source. And some friends here in Alaska who raise them for food for their family.
Nome, in Alaska, was originally scrawled by a cartographer as Cape Name? and someone misread the handwriting.
Chicken, Alaska, is because ptarmigan was too hard to spell, I’m told.
Jennie
Wouldn’t they be a bit ticked off now if some other town with a more literate legislative body decided to name their town Ptarmigan, Alaska? 
djm
Hood Canal (in Washington state, USA) isn’t a canal. The cartographer just didn’t know how to spell “channel”. Oh, and it’s actually a fjord.
Norwegian Fjord Horse
is a Draft Pony
How about “The Presbyterian Jig”? It’s a reel. The version I know, anyway.
NFHs are soooooo cool looking.
djm