Mom lets you put in just the tip

Mom looked around with a clearly nervous look on her face. She clearly was trying to figure out a way out of this situation without going all the way. Clearly she got an idea and looked at me and said, "Well... I can't let you have sex with me, but why don't I at least let you see how it feels? Ok?" Mom looks at me clearly hoping to convince me. I let her think that this is good enough for me.

"Ok, mom. If that is the best I can get."

Mom grabs me by the hand and pulls me over to her bed where she sits on the end and spreads her legs. She smiles at me and says, "Ok, John. Come up to me and you can stick your head in ok? Just the tip." I move up to her and start rubbing my head along her slit to get nice and lubed up. Then you slowly insert your cock head into the pussy I have been dreaming about. Mom's eyes get wider and her mouth forms a nice "O" as she lets out a quiet moan. I savor and memorize this new amazing wet, pleasing hole I am inside that is surprisingly tight. Mom sees the clear look of pleasure on my face and smiles up at me. "So, how does mommy feel?"

"Oh god, mom. This is amazing! You feel so tight!" Mom giggles clearly enjoying the compliment. Now that I am in though I know I need to make the most of this. I either need to pull away and wait for more in the future or come up with a way to seal the deal now.