Best way to use it: At least 5x extract, in a water bong, hold hit in for 10-20 seconds, use a torch lighter (this is key, I bet a lot of people not getting effects aren't doing it right and not heating it up hot enough).
I did it several times. It only lasts hardcore for a few minutes, with it completely done in 10-15 minutes.
So by that token its not a very good drug, and its not really euphoric or anything, but I can say it got me fvcked up, but in a sorta weird way. So its not something I care to ever do again since its not recreational like cannabis where you chill out with your buddies and have a good time. But if you wanna try it, go ahead... Its cheap, and one good hit should make you at least feel something.
edit: But yeah, some of the times I did it I doubt I would've been able to make a sandwich. Its pretty weird and hits you hella hard, kinda like you just gotta sit in a chair for a few minutes till it wears off.