I had this discussion with my other half, who runs. She is petite in stature but "jumped the queue" when it came to handing out boobies. Anyway, she says it really is upsetting to be catcalled for being well blessed up front. For a while, I couldn't totally understand that; I mean....it would've been a compliment surely, albeit crude ones ? I said I could understand if they shouted stuff if she was overweight and/or had a fat arse but I guess she's right.
I admit that if i see a female jogger, I will casually check her out but won't be hanging out of my car window, shouting "encouragement". Women do it too, so it ain't just white van man, but I guess two wrongs don't make a right...