I can remember standing in a play park, waiting for my mother, aged 12 or so. Wearing a school duffel coat, with my satchel over my shoulder (it was a long time ago!) This bloke came up, about mid 20s I guess, and just straight out asked if I was a virgin. Caught unawares, I answered in the affirmative, whereupon he asked me if I would like not to be. I didn't answer that one and fortunately he walked off then. My mother appeared just then and I recounted the conversation to her and she raced across the park after him, bellowing about what a dirty pig he was, and when she caught him she was going to wash his mouth out with soap 
I must admit, I was a bit embarrassed at the time (she was causing a scene) but my God I admire her now. That bloke was lucky she didn't catch him.
And on another occasion, confronting the 'local perv' (known for his interest in young girls) in the woods, as I stood surrounded by 3 of my 4 big brothers, for the time he'd tried to entice me away from right outside my home. She had no fear.
It was, and is, disgusting that some men view women and girls as pieces of meat solely there for their own enjoyment/use.