When I was young, when I became mature, I stood behind my aunt in exactly the same way and dressed up in a totally excited way. I quickly cummed on her skirt.
I had a similar experience in South Africa. I heard the maid while I was in the bathroom and I only had a towel in there. I stroked my cock a bit to get a nice erection, wrapped the towel around me and walked out to see she was on the other side of the bed, facing me. She was a gorgeous young black girl. She saw my hard on of course so I went over and stood facing her, my heart and cock pounding. I unbuttoned her uniform down the front to see her bra and panties then we started kissing. I dropped the towel and placed her hand on my cock. She squeezed it so that was the signal she was going to go along. We ended up fucking on the bed and met up again when her shift was over for more