Her eyes above her mask stared into mine. I stared back, aroused by the anonymity of a masked mature female masturbating opposite me in a sparsely populated train carriage.

I too, was masked, my stiff cock out for her to watch me masturbate. No words spoken, the freedom to do this erotic act with a stranger and yet stay anonymous was intensely thrilling.

Her skirt hitched up, legs spread wide, knickers removed, revealing a glistening wet pussy; being urgently fingered. Watching, I wanked in response.

Panting, the only vocal contact we had until the ecstasy of mutual orgasms joined us.