Spooning used to mean making out. There is a wonderful story about Nabokov when he was teaching at Cornell University in the States. Nabokov's English was excellent but one day in the Staff Lounge one of his colleagues was complaining that 2 of his students were spooning on the back row during his lecture, and this was an expression Nabokov had not come acrosss before. He asked what it meant and when it had been explained to him, he said, "Well, you must just be thankful they weren't forking.".