When I was 10,me and my 5 year old sister used to french kiss each other and one night I said I wanted to feel my cock being sucked. She immediately said "i'll do it" and got on her knees and put my tiny erect cock in her hot mouth and sucked it. It was really exciting and tickly. We ended up naked and she let me kiss her little pussy and stick my finger up her bum, she then wanked me off until I came. I remember sucking her nippled and the pissy smell of her pussy as we gigled and kissed.