Jeff Adachi, John Avalos, David Chiu, Bevan Dufty, Dennis Herrera, Joanna Rees, Phil Ting, and Leland Yee will all sport their finest bikinis (or not) during this Saturday's fundraiser car wash for McKinley Elementary School. No word yet if frontrunner Ed Lee will show up for some sudsy fun in the sun, but a boy can dream. Anyway, here are the rules:

• All registered candidates are invited
• No campaigning allowed [ed's note: chortle]
• The challenge is driven by parent volunteers, and not an official activity of the PTA, McKinley, or SFUSD
• Last year 9 of 11 Board of Ed candidates turned out. So come by our foamy “forum,” get a wash and a bite at the bake sale, and see which of the 16 mayor’s candidates show up to wield the squeegee.]

Your SFist editor will also make a special guest appearance -- very special guest appearance -- at Saturday's car bath. Don't miss it.

What: Mayoral Candidate Car Wash Challenge
When: Saturday, September 17
Where: McKinley Elementary School, 1025 - 14th Street (at Castro)
Time: 10am - 2pm