Finally, though, we'd each had as much as we could stand. I felt my balls tighten up, and warned her that I was about to come; I thought she'd pull her mouth away, but she didn't. Instead, when my first wad of cum emptied into her mouth, she just pulled her head back so that just the head of my penis was in her mouth, and let me continue to shoot spurt after spurt of cum into her mouth, swallowing it. When I felt the last spasm, I returned to what I'd been doing – gently rubbing her clitoris with my tongue, while I felt her take my penis back into her mouth and start to suck and lick the cum off it. While she was doing that, I continued to lick her clitoris, but moved one hand up so that I could collect some of her juices on it before starting to work it inside her vagina. When I started doing that, she released my penis from her mouth and arched her back, making it easier for me to work my finger into her tight, wet slit. I finally got my finger all the way inside her, and then started twisting it around in her, to get it as wet as possible. Then I pulled it almost all the way out, and slowly pushed it back in again – enjoying the sight as her slippery vaginal lips seemed to hold onto it as it penetrated her, and how her vagina held onto my wet finger as I pulled it back out again. I could feel her hymen as I put my finger inside her, but it didn't seem to completely block her; I could readily slide past it.
She seemed to really enjoy that, along with the tongue-lashing I was giving her clitoris, and it wasn't too long before I could feel her tense up over me; and as she gasped out her climax, I could feel her vaginal muscles clamping down on my finger, and taste the juices as they fairly flowed out of her.