ถึง seakayak :Yep - it was based on the 1969 thesis about what would happen if Supes tried to fuck the three women in his life - the result being that heads would explode when he blew his wad. The book was called "Man of Steel, Woman of Kleenex". It's 'kin hilarious.
The was a joke around in the 60's that when Superman finally fucked Lois Lane that, when he came, he blew the top of her head off which his load. :) In any case, this is a great scene... Love KB... I would have like to have seen her at the Melody Theater back in the 70's.