For Christmas the twins got yoga mats. Nat’s was blue, Kat’s was pink.

“But we can share, right?” said Nat.

“Sure,” Kat agreed. “We’ll share yours.”

“What about yours?” Nat wanted to know.

“Mine’s for special occasions,” Kat said.

“So what shall we do first?” Nat asked.

“We’ll start out with the basics,” Kat said. “I’ll do the downward dog and you’ll fuck me from behind.”

Midway through her orgasm, Kat’s legs gave out.

Nat followed her to the mat.

“Oh yeah,” Kat extolled. “Keep fucking me. Deeper. Deeper. I wanna feel your balls on my butt.”

Nat fucked her deeper and deeper.

Kat yowled. So slippery did her cunt become, so hard did it squeeze Nat’s cock, that he couldn’t stay in.

Quickly Kat swiveled.

“Squeeze my tits now,” Kat commanded. “Squeeze my tits while you rub your dick on my clit.”

Nat squeezed Kat’s tits. His dick rubbed her clit.

“More, more, more,” Kat gasped. “I need one more cum. One more, one more, one more.”

“Good dog,” said Kat, once she was fully satisfied.

“What about the pink mat?” Nat asked. “What about the special occasion?”

“Don’t be so greedy,” Kat said.