Out of character for me but fun.
One day I was on our local transit system sitting in a single seat on the bus. The bus was becoming packed very, very quickly. I was facing the isle and a very cute young blonde woman was standing right in front of me wearing a tank top and a lovely knee length flowing skirt that was pressed very tightly towards her genital area. She was getting pushed closer to me as the bus filled up. It got to the point where one leg was in between my two legs almost stradling one of my legs. It was very close. She looked at me and I nodded at her and she smiled. I was letting her know it was okay for her to be there. I was inspecting her body and I just had this urge to touch her. I began to put my hand up her skirt. I touched her inner thigh and waited for her reaction. She just looked at me and grinned and sort of moved in closer to me. I knew she wanted it.
I slid my hand up a bit further and ended up at her crotch. I felt her gasp when I touched it. I rubbed it a bit and then slid two fingers inside her panties. I began to enter her wet pussy. I entered her slowly and she was truly enjoying this. I fingered her until she came. She made little noise but you could tell how hard it was for her to do this. Her stop was coming up and she smiled at me, nodded and got off the bus.
I couldn't believe I just fingered a stranger but it was so enjoyable. When I got home I masturbated with the same fingers I fingered her with. It was so exciting. I hope I can find some willing people in the future!