When Amber felt Bobby's boiling cauldron of cum blast into her ass, she screamed, "CUMMMMINGGGGGGG! Oh it's so fucking good!"

In a chain reaction, Amber's orgasm triggered Billy's. "Unggggh," he moaned, unable to even enunciate how powerful his orgasm was. "Fuck!" he finally said as all three of the siblings lay in a sweating, panting mass.

After a minute, as Amber caught her breath, she gasped, "Let me up. I have to pee!"

The boys scrambled to let their little sister up. Presently they heard her turn the shower on. "That's three showers in like 2 hours for her," Billy laughed.

"Well, I guess if two guys were doing to...