Of the first 15 (out of 82) books Amazon.com lists as being about 'group sex', four are about the Sex Pistols. Erm, I know there were some interesting events in the life of the band, but I wonder if this is a case of 'group: Sex Pistols' being misinterpreted.
Even more curiously. the top result is Raising Cain: Protecting the Emotional Life of Boys. Which is abot bringing up male children.
Sadly, they don't have one of my favourite titles from the British Library's naughty book list: Sex + Sex = Gruppen Sex...
amused