Reason

"I have longer legs and bigger tits," said Lana.

"I have a nicer ass," said Monica who turns around and sticks her ass out.

"Yeah, but I do anal, and she does not."

"Oh yeah, I swallow, and she doesn't!"

"I've had more partners, so I have more experience!"

"Shush!" I told them.

"Now I'm going to make my decision. I will give one of you the greatest fuck her life while the other must watch while you masturbate and suck your thumb."

"I'm going to fuck....Monica!" I chose her simply because I thought she was more attractive.

"Yay!"

"But I'm going to fuck you up the ass."

Monica swallows and nods.

I have Monica bend over the toilet and grab the pipe going from the wall to the toilet. I stripped and got behind Monica. I started to spank her. "Always...." SMACK..."get spanked...." SMACK before a...." SMACK! "...fuck! You love it!" SMACK!

After I spanked her for a minute, I slid my cock into her wet pussy. I looked at the forelorn Lana who was sucking her thumb and masturbating. After three minutes of fucking Monica's pussy, I pulled out and slid it into her tight, virgin anus.

"Eeee!" squealed Monica.

"Yeah, you love it, but save it..." I worked in further.

"EEEE!"

"for a special occaision to keep it nice and tight. You orgasm like mad when fucked up the ass."

Monica started to orgasm.

I fucked Monica's anus for several minutes before I came deep inside her.

After I pulled out, I had Monica suck me clean and had Lana clean her friend's anus with her tongue.

"Now ladies," I said as I zipped up. "I have one final task for you to fulfill today."