Yup

Trunks was floored by the suggestion. Jack off? Here? In front of his mom, and his enemies? He looked at the smiling 18, and then turned to his mom being fucked by 18's brother, and realized that 18 was right. He was turned on at the sight. Trunks rose to his feet and began to jerk it while staring at his mom being fucked. 18 couldn't help herself, and began to laugh at the sad sight.

Bulma couldn't believe her eyes as she saw her son rise and start stroking that tiny dick of his. Something about the sight was so ridiculous. Maybe it was the desperate look in his eyes, or the fact that his entire hand almost covered his dick when he jerked it, but either way, she felt a laugh escape her. She quickly stopped it in a way that Trunks couldn't tell if he imagined it or not, but 17 picked up on it.

"Looks like you're starting to enjoy your son's humiliation." Whispered 17.

"No...I..." Said Bulma.

17 smiled as he thought up a sinister plan.

"Let's play another round of question and answer, alright?" Said 17, as he continued. "Remember, no lying."

Bulma just moaned, and 17 took that as a yes.

"What's happening right now?"

"I'm...being fucked...by Android 17."

"Is anyone watching?"

"Yes...your sister...and...my son, oh God yes"

"And what is your son doing right now?"

"He's...jerking off."

"Now, why would he be doing that?"

"Because...oh God...Because he gets off...watching me."

"And why didn't you fuck Trunks instead of me?"

"Because...oh fuck...Because I wanted...I wanted to feel good...and your dick...Was so...big, and his...his dick...is so TINYYYYY!"

At the last words, Bulma started cumming. 17 didn't last much longer, as he started to cum inside the beautiful middle aged MILF.

Bulma didn't realize, or perhaps didn't care, that as she answered the questions, she got louder and louder, till Trunks was able to hear every word. Seeing his mom cum while shouting about how small he was sent Trunks over the edge, and he started cumming right there in front of a laughing 18. To add insult to injury, Trunks fell to the ground, and landed chest first in his own spunk.

Bulma collapsed face down, before 17 flipped over the barely conscious woman. He admired the massive load he managed to leave in Bulma, before walking back over to his sister, his flaccid dick swaying as he walked.