I sort of do, and I can pinpoint the exact date when it started. It was April 5th, 2010. It was the first time I had gone to a White Sox opening day game. When the game ended I had to pee pretty bad, I go into the bathroom and there's maybe a row of a dozen or so urinals, every urinal had a line like 5-6 deep. All the while in line you can hear people drunkenly shout to hurry up. Then when I finally get up to the urinal, despite having a bladder ready to explode, I just can't get even a trickle out. All the yelling and pressure got to me.
Now, that's not to say I can never pee at a urinal. Just there are some conditions; like it can't be very busy, definitely not with people standing next to me. Little divider walls are a big help. Alcohol doesn't seem to be effective, I've been stumbly drunk and not able to get a stream going. Troughs are a complete non-starter. I don't care how long the trough is, if there's a single other person in the bathroom at the time I can't do it.