On all fours.

"How about on our hands and knees?" Catherine replied, looking at her friend to see if she was okay with the suggestion.

"Sure," Susan nodded and the two women got on all fours on the bed, offering me a great view of their sopping wet labia peeking between their well-toned ass cheeks.

"Who to fuck first?" I asked myself out loud. It was always the same dilemma whenever I had sex with more than one woman that I had yet to solve short of growing another dick.

"Cat," Susan offered. "I already have a three day head start."

Catherine smiled at her friend before looking back at me over her shoulder. "Don't be gentle with that big, fat cock of yours!"

"I wasn't planning to," I grinned and gave her a playful slap on the ass, causing her to let out a surprised yelp that turned into a grunt when I unceremoniously shoved the full length of my cock deep into her tight, wet cunt. I grabbed hold of her wide hips for leverage and began pounding away, my loins loudly slapping against her rippling ass cheeks.

Regrettably from my angle I couldn't see Catherine's large tits swing back and forth to the tempo of my thrusts but Susan could. It was clear that the petite Chinese nymph had long wanted to suck on her friend's tits and she took advantage of the situation by laying down on her back and sliding beneath her friend to suckle on her breasts like a hungry calf.

Catherine was mewling from the erotic overstimulation from both behind and below her and it didn't take long for her pussy to clamp around my shaft, signalling the beginning of her climax.