Never heard it.
Yes, I think I heard it here.
Yes. Generally on display right below the tramp stamp.
Yup
Yes.
Yes.
Nope.
Yes.
Ah, you mean the ass antlers. Quite so. 
Yes, heard of it here first, I believe.
Paris Texas vs. Paris France
Yes.
Yes, I’ve heard it before. I consider it something like “muffintop”, a relatively recent term I only really expect to hear from women.
Oh, well, beaten to the punch by LobotomyBoy.
New one to me.
Now that I think of it I see a lot of tats in the shape of a whale tail.
yes on car spoilers
yes on aircraft tails (727, DC9)
no on butt floss
Yes, but I only learned it recently.
Yes.
It should come as no surprise that there are entire websites devoted to this fashion phenomenon. You can Google the obvious keywords yourself.
According to Wiki the first turbo(with whale tail) came out in 1978.
The tail on the Porsche would have been specially designed to vent cooling air into the car’s engine bay, and later I think they also fitted an air to air intercooler under the spoiler. I don’t think it would have done much good on a Camaro, where the engine is in the front of the car.
This. Never heard a spoiler referred to as such.