In his capacity as a semi-official "cultural ambassador" for Slovenia, the philosopher Slavoj Zizek was granted a diplomatic passport. He soon relinquished it. "I thought it would make it easier to travel, but it was the opposite," he recalled. "I would try to go through with the diplomatic passport, and the immigration officials would look at me and think, What kind of diplomat is this guy? So it would take twice as long!"
Sources
The New Yorker, May 5, 2003