"Do you want to interrupt them?" Uncle Jay asked as the two girls sucked on each others' titties, and the other guests laughed.
Daddy declared, "We'll tell them your decision once they're done with each other."
A few more laughs, then Jay asked, "How far do you think they'll go?"
Marge answered, "The way they're enjoying themselves now, I'm sure they're planning to go all the way."
Jenny decided she was going to do precisely that, and rolled Tammy onto her back so she could kiss her way slowly down her sister's pretty tummy until she was nosing her way into her pussy. Tammy greedily responded by grinding into Jenny's face, then grabbing her ass and returning the love.
"Wow," Leah said. Jenny had forgotten her friend was there, but she was too horny now to be embarrassed. She hoped Leah was getting some ideas, because she was suddenly wanting to make love to her as well.
"Looks like they already know what they're doing," Uncle Jay noted. Others agreed.
They kept getting comments as they continued, but also quite a few compliments. After Jenny orgasmed, Tammy rolled her over and took the top so she could sit up on her knees straddling Jenny's face, which got her praise for her oversized tits, including Marge declaring she'd love to play with them. Leah responded with a 'Mother!'.
She had started fingering herself, which drew back some attention. Marge told her daughter, "Why not? And look at that beautiful pussy your buddy Jenny has, girl. I bet she'd let you play with it."
Tammy began cumming, noisily, so Jenny didn't hear the response. She finally finished and climbed off Jenny, then bent down and started licking her face clean as the room applauded. That ended with another long kiss.
"That was beautiful, girls," Daddy told them. "So it's time to tell you what you'll be doing. First, you get back to serving snacks and drinks. Put some heels on, but stay naked otherwise."
They both giggled and nodded.
"After the game is over, we will be taking you to..."