When it rains, it pours...

Why is it that when it'a raining, not a light rain or a medium rain, but a full on down pour... a can't see five feet in front of me kind of rain, people insist on riding my rear end? I do 5 or more under the speed limit depending on the force of the rain, I have my kids in the car! And tonight, I look back in my rear view mirror to see a car full of young girls right on my butt! I was doing 30 in a 35. I couldn't see! I don't know how they could, or IF they could. But, they were so close to me that I could see one of them, the one in the passenger seat with her face pressed to the windshield, I kid you not, trying to intimidate me into going faster, LOL! What a joke! I slowed down to 15. Little punks!