Yes. I HAVE seen what you're looking for. Unfortunately, I can't provide you with any good information on how to find it.
It was at least ten years ago - I saw it on VHS (that's how long ago it was). Two blondes. I remember one looking like a burnt-out, frizzy, bleached bimbo with implants (maybe it was Chessie Moore?!?!?!?).
They had two double-headed dildos and they were similtaneously working them in all four holes.
I distinctly remembered thinking "Now there's something you don't see every day."
Haven't seen it since, in fact.
i have this release on vhs and yes it featured Chessie Moore going to town with some other porn chick & 2 doubleheaded dildos in all 4 holes. its a pretty good scene! it was called "Girls Will Be Boys, pt.2".