[pm215]

The term "WTF-8" has been around for a long time. Here's an example from 2008:

http://www-uxsup.csx.cam.ac.uk/~fanf2/hermes/doc/qsmtp/draft...

[rspeer]

I love this.

    The key words "WHAT", "DAMNIT", "GOOD GRIEF", "FOR HEAVEN'S SAKE",
    "RIDICULOUS", "BLOODY HELL", and "DIE IN A GREAT BIG CHEMICAL FIRE"
    in this memo are to be interpreted as described in [RFC2119].

[SimonSapin]

See also http://tools.ietf.org/html/rfc6919