17

Bulma looked at her two choices as the the androids rapidly approached the count of one. The confident android, and her pleading son. The thought of fucking a monster like 17 was unbearable, but so was fucking her son, and even if the androids were clearly tormenting her, there was something weird at how eager Trunks was to fuck her.

"Three...two..."

Bulma had no time to think about the choice any longer.

"I want to fuck the big dick!" She blurted out.

The two androids started laughing, as her son fell to his knees in despair.

"Sorry kid, even your mom thinks you can't satisfy her." Said 17

"Trunks, I'm...I'm sorry." Said Bulma.

"Now, now. No more talking to Baby Trunks until we're finished." Said 17 as he slowly walked up behind her. "Now get on your hands and knees."

Bulma did as she was told, as the bottomless cyborg knelled down behind her. She felt him rub the tip of his penis against her clit and Bulma realized just how wet she truly was. Was some part of her excited about this? Before she could even think about that, she felt 17 enter her, and she let a moan of pleasure escape her. It had been so long since she had sex last, and 17 truly was impressive. She felt 17 grab a hold of her tits with both hands as he started moving faster. Bulma stopped trying to contain her pleasure, and started moaning along to 17's rhythm. She looked up at 18 as she hovered over her son, who had fallen to his hands and knees in tears at the sight of his mom being fucked by his mortal enemy. She noticed that his dick had still not gone down.

"You really are pathetic aren't you." Said 18, as she bent down to Trunk's face. "The best part is, I know you didn't really want to fuck your mom."

Trunks was surprised by the words, as he looked up at the face of his tormentor.

"You're really upset because you're realizing how badly you enjoy watching her be fucked by someone better then you, and you're having trouble accepting that." Said 18, as she brushed her hair behind her ear.

"That's not true." Said Trunks, softly.

"Of course it is." Said 18, as she pointed to his stiff dick, that was now dripping with pre cum. "You can lie to me all you want, but that part of you won't ever lie. You're so fucking turned on it's driving you crazy, and you hate that. At least be honest with yourself."

Trunks looked stunned, as 18 slyly smiled. She knew the thought wouldn't get out of his head now.

"You can masturbate if you want." Said 18, to a broken Trunks.