You refused and the situation escalated ultimately in your favor!

"... nope!" You said with a smirk, knowing that this might be your only chance to get back at your sister-in-law for what she did earlier and to make her comply to your demand as well.

"Give it to me!" Your sister-in-law demanded with her tone is becoming slightly more aggressive and her voice raised a little more.

"Make me!" You said so with that smirk still on your face.

Have had enough with you, your sister-in-law charged out of the shower to snatch the towel from you. However, you simply moved away and snatch her by her waists! And once you are behind her, you used your still erected penis to rub behind her legs while your drop your towel and begin to grope one of her super big bosoms.

"Hey! Let me-" But before she can even finish or perform a struggle, you kissed her deeply on her lips and insert your tongue into her mouth!

At first, you can feel the signs of her struggling against you. But as times passed by, her struggle against you is becoming less and less.

"Is she actually enjoying this deep down?" - You think to yourself as you keep groping and kissing your sexy and busty sister-in-law.

And soon, the situation between you and her escalated further once you can no longer control your own desire and insert your erected cock into her pussy!

"Um! Hmm!" Your sister-in-law moaned sexily into your throat as her eyes go wide in surprise due to the fact that you just penetrated her in the pussy out of sudden!

Once inside, you begin to move your dick in and out of her regularly, slowly but surely making your way up to the entrance of her womb as you can feel the walls of fleshes are tightening their grips around your big and strong penis that is full of sperms!

"She is actually enjoying this!" - You think to yourself as you are not only just groping and kissing your busty and beautiful sister-in-law now but also having sex with her for real!

"Um! Um! Um! Hmm! Oh! Huh! Ah! Um! Hmm! Oh! Ah!" You and your sister-in-law moaned in unison into each other's throats as you are assaulting her cervix with that dick of yours with all of your might.

And each time you slammed your penis against her womb's entrance, movements made by your cock can actually be seen on the surface of her belly as both of her colossal breasts still managed to do some bouncing despite being grabbed and even groping by you from behind.

Lost the track of time in lust, you and your sister-in-law enjoyed each other's company to the fullest. But suddenly, something brought you and her back to reality!

KNOCK! KNOCK! KNOCK!

"Huh?!" You and her said as soon as you and her heard the knocking sounds at the door. Knowing that she needed to answer, you and her moved slowly but surely together toward the door with your dick is still inside of her pussy.

"Hello?" Your sister-in-law said as she's reaching for the door and open it a little to prevent the other party from seeing you and her naked body.

And to yours and her luck, it was your little brother! Her husband!

"Hey! What took you so long?! And did you see my brother? None of us see him anywhere!" Your brother said as he's looking at his wife.

"Nope! I didn't see him!" Your sister-in-law lied with a normal face to make sure he didn't suspect anything.

Sensing an opportunity to do such a thing in front of your brother, you cannot helped yourself but to continue pulling your dick in and out of her again and again. And because of such actions, your sister-in-law almost let it slipped up about your whereabouts.

"Are you okay? Your face looked... weird..." Your brother asked his wife with concern in his voice.

"I'm okay! I'm okay! Just feeling a bit... concerning! Yeah! I mean, your brother disappeared without traces after all!" She said politely in her best attempt to mask the feelings of being pumped from behind in the pussy and the **** on her womb's entrance by your cock.

"Well, if you see him by any chance, which is highly unlikely since you are taking a shower at the moment, then inform us, okay?" Your brother requested his wife as you are having fun with his wife from the other side of the door by penetrating her in the pussy with your penis nonstop.

And just as soon as your brother turned away, you immediately increased the speed and the strength! And after some more powerful thrusts at extraordinary speed, you cum inside of your sister-in-law without even a second thought while you pulled her back inside and begin groping her on both of her gigantic breasts and also kiss her deeply and passionately to make sure her mouth remained shut to prevent her from screaming in lustful pleasure.

Inside of her, you are filling her womb to the brim with your sperms. And as you are unloading your sperms into her womb, her ovaries dropped three eggs inside. And once they are in there, they are stormed by your sperms!

"Oh yeah! That was... so good!" You said as you let your sister-in-law go after you pulled out of her and lean on the wall to get some rests.

But suddenly, your sister-in-law punched you in the face and everything goes black!

Sometime later by dinner...

"Wow! That is one big black eye!" Your wife said as she's looking at your face with the black right eye that is the result of the punch from your sister-in-law some hours ago.

"So where have you been? Like why did you leave the house without even informing anyone? I mean, at least one us could have been there for you when you got robbed!" Your brother said with more with concern because according to the story that his wife, your sister-in-law, told him is that you left the house to buy some groceries and snacks just in case but got robbed as a result.

As for how your sister-in-law convinced everyone of this story? She claimed that she found you lying **** in an alley behind the grocery store after she finished her shower and leave with to find you by a car by herself.

Obviously, this is a cover-up story to hide what really happened in the toilet between you and her. And your guess is that she either found what happened to be shameful and wanting to bury it away or she was afraid of a division in the family that could turned violent if she spoke truth. Either way, this struck guilt in you.

And unbeknownst to you, you will get to do her many favors later on because inside of her womb, those three eggs of hers are already being penetrated and fertilized by your sperms. And so, her pregnancy as a result of you taking advantage of her some hours ago in the toilet is now inevitable!