Your mom is laying on the bed just reading a book, and you are next to her doing your homework on the laptop. Or, at least that's what she thinks you are doing.
She decides it doesn't seem like you are doing homework after all, so she asks you. You tell her you are, but a little bit later she says again that it doesn't seem like you're doing much typing for that to be homework. You reluctantly turn the screen towards her and she sees you are in fact looking at internet porn. She is somewhat shocked at first, but then tells you that she's a cool mom, and she understands, but wow are things different than when she was a young girl. All that cum flying everywhere, and all the oiled up boobs and butts.
"Is that what you're into? All that cum flying and all those oiled up boobs and butts and all that titty fucking? Have you.... ever fucked a woman's tits before? No. Well, would you like to try it? I mean, we could maybe try it. It would be OK if all I was doing was holding them for you while you moved your cock in and out of them, right? I would just be doing a duty by teaching you the proper way! I have ample cleavage for you, and judging by how large your cock looks from that erection I can see in your pants, it's a good thing I do!"
She takes off her shirt and lays down on the bed, oiling up her cleavage for you to mount her and stick your cock between her massive tits. She removes her top, and then her bra, and encourages you to stick your erection in between her soft, oiled up breasts. You do as your told, and it feels incredible.
"Wow, your cock is so big that I can stick my tongue out each time you come up and touch the tip. I like doing that, but I'm not sure that I should since it seems wrong. You just keep moving in and out of my cleavage honey, and I'll try not to stick my tongue out and on to the tip of your cock as you do, but if I stick my tongue out when you're going to cum, then I'm just sitting here with my tongue out, right? I mean, there's nothing wrong with that, is there? Ok, well you just let me know when you're about to cum and I will stick it out and you can cum... wherever. If it just happens to get in my mouth well then it does.
Mom sees you are getting close and does just that. She sticks out her tongue and you blow a huge load all over her mouth and face. That was incredible learning how to properly fuck a real woman's tits!
Don't forget, we didn't do anything wrong