Give him oral support...

You watched him as he keeps stroking his large cock for a while, you felt that this situation is quite arousing, especially the fact that he is jerking off this hard because of you, and you feel that your pussy is getting moist.

You suddenly felt the urge to taste him, you've never seen such a big cock like his, and you are positively sure that you wanna try it, you're willing to bet that it would feel soo good, you are getting wet just by thinking about it, but you realized again that he is your younger brother, but then again he is now jerking off to you.

You pondered for a bit and decided to settle just by giving him a blow job, As an act of kindness for his cock being this hard and jerking off so excitedly because of you.

So you wake up and sit on the bed, looking straight at him and then his big delicious cock, while he was in a state of a shock, seeing that you now know that he's jerking off to you.

He stared at you with his jaw dropped then at his cock, paralyzed from fear and guilt, but you smiled to him and said.

"I always knew that you find me attractive... but... well not this way at least..." You teased him a little.

"Sis! I was... just... I... was... ju... shit..." He was stutering and you can tell that he was so afraid that you felt guilty for teasing him like that.

"Relax... it's ok... boys do that, I know... so, you need any help with that?" You asked him.

He just stared at you, too confused and afraid to answer, so you just took the liberty to decide that he just said yes, and you stood up and move next to him, and then softly touch the tip of his cock and then replace his hand with yours and starts to jerk him off slowly.

As he felt your hand touched his penis, he flinched, and moan softly, it was clear that he enjoys it, so you stroke his big cock slowly, feeling up his size and hardness, and it's really warm, he must be very very horny right now.

Feeling you jerked him off enough, you hold him by his cock and turn him around, then push him gently to the bed so he can sit on it, then kneel in front of him, and without warning you flip your hair to the side, hold his cock and lick the tip.

"Oh... shit..." He muttered as he felt your warm tounge connected with his cock.

You kept licking his hard cock like licking a lollipop still maintaining eye contact with him, and the effect was very obvious as he groan and moan with each lick, but you don't stop there, you suck the tip of his cock hard and pop it out of your mouth and then lick it again.

He just sat there looking at you with lustful eyes and half open lips, moaning as he can feel the erotic pleasure that you were giving him, and you decided that the show can begin as you slip his cock as deep as you can inside your mouth and gave him the best blow job ever.

Your head is bobbing up and down in rhythm, slowly at first and speeding up, then you suck the tip hard again and lick it fast and slip it inside your mouth again.

You continue to suck his big cock that barely fits in your mouth, he gently put his hand on your head and then move his hips to follow the sexual rhythm, faster and faster.

"Oooh... shit... I can't believe we're actually doing this... but damn... aaah... sis... this feels too good... I'm gonna cum soon..." He tells you.

You just looked at him and then stroke his cock with your hand and lick the tip of his cock, and then suck it again faster.

"Oooh... shit... aaah... shit... here it comes..." He moves his hips faster.