I started working my tongue into the hole slightly. It met stiff resistance. This was going to be a monumental conquest. I smiled and continued rimming her. Crystal moaned. My tongue returned to her pussy, focusing on her clit. It was time to push her boundaries. Just a little. As my tongue flicked against the hard nub at the top of her cunt, I ran my index finger over her sap-covered pussy lips. Well-lubricated, I then touched my fingertip to her asshole. Predictably, she clenched.

"What's that?" she asked, unsure. Her head had whipped around, and she looked at me with shocked eyes.

"Babe," I said, "if you want to...