Riding in to work this morning the car in front of me started washing his windshield on the interstate at about 75mph. End result is that I got covered with wiper fluid. My bike, helmet and clothes were covered, and this is with me a good 2-3 seconds behind the car. That fluid does not wipe off as easily as water does when it's raining so after trying to wipe it off and just smearing it worse, I had to life my visor to see. Open visor + 75mph + no glasses= a bad situation.

This happens to me once and a while and it annoys me to no end. I understand that people sometimes do it without realizing it, but even if it's another car behind me, I'll wait until they are far enough behind or changes lanes before washing my windsheild in my truck. It just seems like common courtesy.
