Captain Cave Man sex talk

Bill and I were having what I thought was a very well coded discussion about previous nights excapades.  I could have sworn that anyone else in the room would have needed a captain cave man decoder ring to figure out what we were talking about.  Matthew yells" Will you guys stop talking!?!  That is 'After Nighttime" talk!!"

Well, I'll be damned.  Where'd he get a captain cave man decoder ring!?  Those things have been sold out since 1980.