Yeah,
Yes, it was Crazy Carl who came up with the nickname. Everett was pissed at a Globe writer (may have been Gordon Edes, not sure) who apparently wrote something uncomplimentary about him. So he basically told the writer to get the F#&k away from him and to "take your Curly Haired Boyfriend with you". And the "CHB" was forever attached to Shaughnessy.
That's awesome.