I flatted during my last lap at my practice race (Folsom Cyclebration) where my rear wheel picked up fully 10 goatheads. I'd like to think that I satisfied the gods with that first race, so I put the tubulars on and *fwew* call the rest luck!
My boy flatted his brand new tubular tire with a big gash in the side wall. It hadn't been ridden more than 100 yards. 
-- gnat!
Windsor: 2010 S-Works Ruby
Pantysgawn: 2011 S-Works Stumpjumper 29er
Whiz!: 2013 S-Works Crux (Singlespeed)
Boucheron: 2009 S-Works Tricross
Haloumi: 2013 Tern P7i
Kraft: 2009 Singlecross
Gouda: 2005 Electra Betty
Roquefort: 1974 Stella SX-73