Wonderful panty sighting today. Firstly, as I went up a station staircase this morning a black schoolgirl was standing by the top step with her back to me.Her skirt was very short and I could clearly see her white cotton knickers. The contrast between her brown legs and her white panties made it incredibly exciting. I stood there for full minute gazing at her knickers and imagining what sniffing them would be like. Then two ladies came up the stairs and tut tutted at me as they saw me looking up the schoolgirl’s skirt. They spoke to the girl who then moved away from the top step. By that time I was so aroused and I rushed to the station toilet. Nobody was in there so I masturbated into a urinal. Such a relief of pent up frustration when I spurted my cum.

Later  in the afternoon I saw my granddaughter’s black knickers when she climbed the stairs when home from school. This necessitated another wank in the toilet.