Set explains the names to the girls

Set pointed his still hard cock at at a redfaced and very aroused Tits, who was looking down in jealous awe at her sister. Booty was on her knees, her eyes closed and her chest and face laid down on the floor, trying to recover from her anal destruction. Her thick booty was stuck high up in the air, both her hands still clutching and pulling apart her buttcheeks, thus baring her gaping asshole to the onlookers. She made no other motion or noise as she kept her position, seemingly lost in an orgasmic daze, proudly displaying her abused and extended open butthole to the adoring crowd above as it steadily leaked rivulets of Set's cum down her crack.

"Oh wow! That looks so fucking tasty! I want it!" Tits exclaimed, as she turned away from her sister and noticed Set's impressive dripping meat pointing at her. One hand was squeezing one of her huge breasts and the other was behind her, rubbing her now sopping wet asshole in hopeful anticipation of her own special butt reaming.

"I bet you do." Set offered, waggling his penis in a move that sent a drop of cum flying up through the air to hit Tits on her toned belly. "But before you get to sink those sexy lips down on this monster, first you gotta perform a public service, and by public I mean me." Set neglected to add that a blowjob would have also been a very welcome service, and not really something she had to work for.

Tits pouted. "Like whatttt!" She whined. "I can't do anything hard, well except that." She winked at his engorged member.

"Oh, I just think you should, y'know, make use of your talents. Your assets. What you were put here on this Earth for."

Tits looked confused. "I don't understand, what are my talents, apart from fucking?"

Set sighed to himself. This girl wasn't all that clever, even though the whole time he'd been talking he'd been staring at her mammoth 34H tits. Time to clue her in. "You're a duo, right, a team, you and your sister? What's she got that you don't?"

Tits frowned. "Well, she's got a much bigger and juicier ass than me..."

"Yep. And that's why she's Booty. Her main purpose is clearly to waggle that sweet fat behind around, and to get it squeezed, slapped, licked and above all fucked silly by everyone with a pulse. Ain't that right Booty?"

"Mmmmmm." Came Booty's murmured consent, although it wasn't clear if she even heard the question.

"And so if your sister is Booty, what are you?" Set questioned.

Tits frowned again and looked up at the ceiling in a bid for answers. Then, as if struck by a brainwave, she looked down at her chest. "Oh!" She squealed happily. "I'm Breasts!"

"Well, close enough." Set nodded. "Actually you're Tits. And that's your reason for being here, that's what you're all about." Set had a vague idea in the back of his mind that some might find this sexist, but it's not as if that had ever remotely stopped him before.

"Ooh, I think I like that!" Tits smiled. "Sooo... you wanna play with my big boobies then?"

"Play with, fuck silly..." Set grinned. "C'mon, wrap those huge knockers around my cock and maybe if you're lucky I'll dip the head in your mouth from time to time, you walking shelf rack."

"Yayy!" Tits clapped her hands together and flung herself at him, her heavy jugs bouncing around her excitement.