Tiger crossed a line by spitting on the green.
Put me in line behind everyone who has already excoriated Tiger Woods for expectorating on the green at the Dubai Desert Classic. Even given all we know about Tiger, this was a new low. Cursing and club-throwing are bad enough, but depositing a slimy, congestion-enhanced loogie on a putting surface with other players on the course behind you is clearly out of bounds. It's not just golf course etiquette; it's common sense. To put it in language Tiger might understand — you don't s*** where you eat, and you don't spit where you putt.