Geez, get off your high horse and drop the attitude. The parent post was speculating and didn't claim to have a monopoly on truth, but of course you can't accept that people who take LSD couldn't possibly experience synaesthesia because *you* have synaesthesia and it's not "like that." You seem to think that the condition you experience is *the* definition of synaesthesia and nothing more, and that's utterly wrong. Synaesthesia is when one type of stimulation evokes another. It is not "Interrobang's condition in which some stimulations evoke others sometimes in a peripheral sense that can be ignored."

Synaesthesia is an effect of LSD that occurs in certain dosages for certain people. Accept that. You've never done a hallucinogen as you've said and have absolutely no right to claim some sort of monopoly on synaesthesia like you seem to hell-bent on doing.

Let's think about it for a second. In your case, your synaesthesia effects are apparently mild and can be ignored. LSD affects the brain in various ways and it's perfectly possible that when it does cause synaesthesia (one of many, many effects), the other effects (such as intense emotional reactions to perceptions and hallucinations that result as a distortion / dissociation from what is being perceived) AMPLIFY the synaesthesia into something more vivid than you could ever imagine. LSD is a very complicated substance that acts on the brain in many ways. Oh, and then there's the fact that you've probably had this condition your entire life and are less likely to react to it in a dramatic fashion as someone who is zonked on acid. Synaesthesia is a documented effect of LSD use and whether or not it's "your kind of synaesthesia" doesn't make isn't synaesthesia at all.