This is 1975 - I wonder if they got "Heavy Mental Kids" from the band Heavy Metal Kids, or direct from Burroughs.
Burroughs, a writer I'm glad existed but who I never have any desire to read.
New York Dolls, a band I'm glad existed but I never have any desire to hear.
Except, except, for this
Heavy Metal Kids, a band where the name is much better than the sonic actuality