To hell with the convention, I want his cock inside me...

You decided that the remaining time is enough for a good quickie.

You hold his still hard cock and stroke it again, then to his delight you kneel and went down on him to lick his stiff erection, you lick and kiss the tip, then suck the side of his cock up and down, you suck the head of his dick hard while stroking it with your soft hand, and release it with a loud pop, then you spit on it and gulped it down your throat.

"Oh shit... sis... that felt amazing... oooohh God..." He moaned in pleasure.

You made sure to lubricate his cock plentifully while you give him a blow job, and then you stop, you stand up then turn around, then you hold his cock and aim it to your pussy, and then lower yourself to let his big hard cock slip inside your tight pussy.

"Ooohhh shit... oooh shit... sis... what the hell... I can't believe I'm fucking you right now..." He groaned.

You move up and down fucking his cock, and he moves his hips to match your movement, moaning and groaning, matching your own moaning, the feeling of his huge erection inside you is amazing, you never felt like this before.

You pump your ass and hips harder as you feel lust building up inside of you, the pleasure from his big cock rubbing the inner side of your pussy felt too good, you kept moaning softly with every thrust, before long you felt orgasm coming with full ****, and you cummed hard, your pussy is massaging his cock inside.

You felt weak after your orgasm, but he kept pistoning his cock harder and faster.

"Sis... aaah... sis... I'm... I'm gonna cum..." He said.

You ram your pussy harder to meet his cock, your ass slapping against his stomach hard and then he couldn't hold it anymore and pulls out his cock to cum all over your ass cheeks, then he rubs his cock to your ass untill all his cum is spent.

You were both sweating and panting but very satisfied.