Don't know about Pelosi but you are talking about the 50th Birthday party of Jack Davis, a gay political consultant. It was in May 1997. It was sort of like the Folsom Street Leather fair. Willie Brown was in attendance at least briefly. One of the highlights was when a priest in the church of Satan was sodomized by a bottle of Jack Daniels while dressed up as Pocahontas.
http://www.sfgate.com/entertainment/article/Jack-Davis-The-big-5-O-and-oh-my-3122252.php
Yuck!
“San Francisco Values”