You follow her in.

You peek in the door at her. You left the computer on. She has started the recording and begins playing with herself through her jeans. She gasps when she sees your big dick on the screen. "Like what you see?" you ask softly, covering her mouth so she don't scream and wake up Karen and the neighbors. You gesture her to follow you out of the room. "You're an Ass!" she slurs.

"Yes an Ass that turns you on, actually it appears my dick excites you more. Let's find us a better place for you to show me that." You lead her to the guest room and see a note on the door that reads:

Kevin- My friend Art's sister needed a place to crash- She will be using the guest room until Tuesday.

What the Fuck!?! Why didn't he text this? Must have been last minute before leaving town. Shit! Lucky the three of you didn't wake her. Art is several years older that your uncle and they only mentioned said sister once or twice, you think she is older than Art putting her in her early 40's at the youngest. Must be a favor to Art's mom as she is like a second mom to your uncle. You and your Uncle are close but his room is off-limits for this kind of adventure.

There was a half ass apartment set up in the basement where Art stayed until moving out of town for a job a year ago. You decide to take Amber down there. She tells you that you can't cum in her pussy but oral is allowed. You are in only your boxers and you two begin making out and stripping her of her garments. You and her are on the old bed in the basement with her on top straddling you. You are surprised at how puffy her areoles are and how pert her nipples are. She pulls your boxers down to your knees and switches around to a 69. As she begins sucking your cock you pull her pink, moist panties aside and go to work on her muff with your tongue and fingers. She is soon moaning into your cock as your face is coated with her love juices and this causes you to shoot into her mouth. She cleans your dick off, savoring the taste (there was a hint of Karen's juice on it).

You are spent for now and she is happy from your oral attention. You leave her there as she appears ready to pass out. You go upstairs to sleep on your uncle's living room couch. You soon fall asleep but wake up a few hours later (you think, it's still dark outside) to a mouth sucking on your dick.
Whose mouth is it?