The name you have chosen for this quilt is perfect! And the fabs are great as well. The thread has been a hilarious read. One thing that instantly came to mind for me was the silouette of the sitting naked girl you often see on the mudflaps of the big semi trucks. Those things have definitely been around since the 70's and would be an easy fusible applique I think and definitely convey the idea of 70's porn!
Additionally LMFAO on Fritz the Kat. I totally remember that movie! Animated porn... ROFLMAO