I remember my uncle telling me I was finally tall enough. I would open my mouth and stand there, and he would slide his cock in. I could never get in much more than the head, until I was older, and we had to go back to sitting while I sucked on him.
That day he slid in to me for the first time I felt like a queen being coronated. He bought me a cake the next day, just for us. I sat on his cock while we ate it and he told me what a good girl I'd been.