What, you rode for two miles without being aware there were two cyclists riding behind you?
I've avoided further engaging cd365 on the matter, because I assume he was joking/trolling, and because his profile says he's already been sent to Coventry. (badum tish. groan)
But let's get some clarity here, I'm not complaining about spitting or launching snot-rockets , because I accept they will occur in the context of high exertion/exercise.
What bothers me is the unsympathetic attitude towards potential victim who may receive a face full of phlegm. Even without the possibility that this constitutes an assault, it's an unbelievably inconsiderate thing to launch in the direction of other people, and can be easily avoided with a simple glance over the shoulder.
Blaming the victim for being in the wrong place is no defence.
Sneering that they deserve this for drafting is unpalatable, and weakens the claim it was accidental.
In society, it's not unreasonable to expect a small degree of consideration, courtesy, decency & respect to others.
(edited to delete a mystery attachment)