I always smoked weed. I used synthetic cannabis once in my life. I felt like my head was a hammer knocking hard on a table for like 10 minutes or so. I hated the feelings it gave me, was very scared, and never touched it again (very years ago)

I strongly advise anyone reading this not to try it. Maybe you get lucky and don’t touch it again,
Or perhaps it ruins your life because of that crazy intense hammer high can make you forget problems. Actually, it will make you forget anything instantly which makes it addictive for people who have stressful lives like homeless or incarcerated people.
Or other life significant problems, because they just want to forget everything for a moment at that point. It’s sad, but it’s true. The high it gives it’s nothing like a weed; it’s a pure zombie-like high you feel. The fact that it is even called synthetic cannabis is an insult to cannabis.
Be smart, don’t let it fool you.