If you're stupid enough to do something retarded under the influence of LSD, then you were probably a fucking moron to begin with.
And yes, LSD can precipitate certain psychoses, such as Schizophrenia, but ONLY if you're already pre-disposed to it.
Ie, if acid fucks you up, there's an incredibly good chance that at some point in your life you were going to get fucked up anyway. If you have a history of schizophrenia in your family, it might be best to stay away from it.
But if everyone in your family is relatively sane, just bang a tab under the sun, and you'll have a mad time.
And remember...if it's bitter, it's a spitter! You don't want to be ingesting DOC or DOM, or any of the other DOx chemicals for your first acid experience, because they tend to last a bit longer (12 hours + in some cases), and are really nowhere near as enjoyable.