I worked as a sales engineer for large software companies for 10 years, and hated it when they held their conferences there. Had to go there numerous times.
Once I was there over the weekend, so my wife flew out to join me. Met her at the airport and we took the train into downtown Saturday morning. First place she wanted to see was the Ferry Plaza Farmers Market. So we get off the train at that station, take the steps up to the street, and as she's getting her first glimpse of the city, I #### you not... about 200 to 300 bicyclers ride by right in front of us, and every single one of them was buck naked.
As you may know, most of my life I was a born again christian (not any more) and so is my wife (still is). I think she is still emotionally shocked about that event. She's never asked to go back to SF, and I don't bring it up.