Body shaking sleep experience

So I have had nights where I have gone to bed and had one heck of a good ol' dream and woke the next morning hot, wet and panting.. but the other night was different. I didn't dream. I just woke up in a full on toe curling, body shaking, doubled up ORGASM. It was nearly as good as the ones I get with my SO after a hardcore fuck session. My first instinct was to look at him like "Wtf" thinking he was guilty of some miracle work, but he was out cold.. anyone else ever wake to something so good?