The best sex in the world. Occurs when you and your partner are both sound asleep and then slowly wake up having sex, in the middle of the night.
Its a trip from Dream State to Horny State.
Afterwards you go back to blissful sleep.
John: "What happened last night?"
Peter: "We had Wake Up Sex"
John: "Whats That?"
Peter: "We were asleep in each others arms and then i was half awake and we were already having sex and it was weird 'cause it was like it was a dream but then we realised it was real so we took it to the next level.It was so horny!"