Yesterday I went for a two mile walk outside. It was gorgeous, and I enjoyed it, but I ran into these issues:
I was honked at. Four times. I don't understand. I don't care if they were "Haha, fat girl exercising" honks or catcall honks, they were completely unnecessary, obnoxious, and put me in a foul mood. If it happened just once, I could have forgiven it, but four times in a half hour?! When I got home, I checked to make sure that I didn't have anything weird on me, my fly wasn't down, etc. I looked completely normal, so I guess I just ran into four jerks. But still, that really puts me off exercising outdoors. Do you girls experience this? How do you deal? I was wearing headphones at the time, and just ignored it, but it still made me feel lousy.
Now for the really embarrassing question. After one mile of that walk (15 minutes), my body decided that it really had to go to the bathroom. I eat a good amount of fibre, and take metamucil (but I take a third of the recommended dose). I mostly do this because I was vegan for a few years, and had bowel movements about twice to three times a day, and it's something I got used to. Psychologically, I really can't handle only having a bowel movement every day or every other day. So yeah, I'm fairly regular. But typically I can hold it in if I really need to. This time my body was screaming at me "You must go NOW!" The thing is, I've noticed this every time I've exercised outdoors, but never while indoors. Truly the call of nature! haha I managed to stop at a library and use their washroom, but I hate having to stop in the middle for a few minutes and have my heart rate go down. Any ideas why this would always happen in the middle of my outdoor workouts? I've tried doing them at various times during the day, but it's always the same result.

...and when it does happen and I notice where it came from, it's usually someone sleezy in a '70-something car! I just ignore. Sort of like the men who come up to you in a grocery store and ask you what perfume you are wearing...followed by more stupidity. WTH?
but like Tracey said, maybe the people honking at you were honking to say "wow, you're hot, look my way!"....