Before continuing the story, I want to express a little bit more about my girlfriend.
My girlfriend has a reciprocating personality, often even overly compensating. This trait is also reflected in sexual interaction. The more pleasure you provide during the foreplay, the freakier she gets during a blowjob and penetration.
I am proud of myself for being an excellent pussy eater and a fingering master. I have always been rewarded by the combination of my skills with some passionate oral and wild dick riding. She likes to take the lead because that's what she did in her previous relationships with the girls. This is unsurprising, as you can easily tell from her tomboy fashion taste and boyish demeanour even in bed.
She always gives me this cocky grin when she squeezes the last drop out of me. That's how she "wins" a sexual contest against me. And I am always happy to give her the trophy she deserves.
Despite the initial shell shock from the big cock, she started giving all she's got to please the cock in her grips. Starting from Dad's balls, she sucked them in turns and lashed out her tongue to give them some thorough massage. All the way up, she trailed along the urethra to the mushroom head and then let it lodge into her mouth. As she slurped his cock head, her hands were tugging the shaft at the same time.
Dad was completely enjoying her service. He let out throaty grunts as his fingers ran through my girlfriend's hair, guiding her to take his cock deeper. But her hands were in the way. He then grabbed her wrists and put them on the back of her head.
"Grrrg, Grrrg, Grrrg, Grrrg..." Dad soon picked up the pace and challenged the depth of her throat.
Thanks to her personality that refuses to admit defeat, especially to men, I managed to make my dick balls-deep in her throat after a few attempts. Our longest deepthoart was about 8 seconds before she gagged out. But facing Dad's bigger and thicker cock, she struggled to take in that extra 5cm, especially since her mouth was stretched out, making it even harder.
The drool started to drip from her chin, and clearly gags were building up. But her head was firmly pressed against that thick girth while her wrists were constrained. She stared up at Dad as if taunting him. This is a chicken game between them.
"You wanna play this game, hun? Hold it there, baby, yes, hmmmmmm..."
Despite her unbending attitude, her throat reflex eventually gave up. As soon as Dad felt the backing motion from her, he released the grips. As my girlfriend was coughing and gasping for breath, he tilted her head back by her hair and relentlessly slapping and rubbing his cock all over her face.
"6:0, you little slut, hmmmmmm, fuck..."
I wondered why it was not 1:0, then soon realised it was the Aussie footy.
It was a much more brutal oral than what we had. I thought my girlfriend would be upset, but I forgot it might only fuel her stubborn competitive spirit.
She tackled his leg, trying to drag him onto the sheet, but it did not move him an inch.
"What are you trying to do, sweetie?"
"Lay down! I will make you VERY REGRET!"
"Alright, as you wish."