Is there liquid spice?...synthetic...the incense I kno0w, but what about liquid spice? Any recommendations?
"Spice" refers to a whole family of synthetic cannabinoids.
Typically, these are sprayed on inert plant material, but nowadays it is also common to see them dissolved into liquids for vaping.
Besides being against the rules, it would be pointless to recommend any such e-liquid type product, as their composition is liable to change as older synthetic cannabinoids become banned and new ones get introduced.
The JWH-xxx compounds originally used in "Spice", "K2" et al. were already highly problematic for many users, and it seems like the current crop of synthethic cannabinoids is so insanely potent that they are almost universally regarded as bad news - extremely addictive (especially since they tend to have very short half-lives, leading to compulsive redosing), very likely to cause psychosis, and even responsible for a number of deaths from kidney failure.
The major reason THC is regarded as a relatively "safe" drug is that it is only a
partial agonist, similar to what suboxone is to opioid receptors: As you increase the dose, you'll eventually reach a point of diminishing returns, where it becomes virtually impossible to intensify the high no matter how much you take. Synthetic cannabinoids, on the other hand, tend to be
full agonists; they can get you so stoned that you're getting physically addicted and are even risking real physiological organ damage, as the massive chronic overaction of cannabinoid receptors can disrupt the normal functioning of your kidneys.
Basically, if THC is the suboxone of cannabinoids, then the synthetic compounds found in the original "spice" were somewhere along the lines of oxycodone, and the new ones are comparable to fentanyl.