I once was with someone who would wake up hard in the middle of the night, and in his half asleep state would grind his cock against my ass. His grinding would wake me and I would let him slide into me, and fill me. Both of us hazy from sleep, he would fuck into me until he came. And it was always the hottest thing. Once he came, he would keep his arms wrapped around me and fall asleep still inside me. I would wake in the morning filled, and thoroughly fucked. Remembering that definitely inspired this audio.