have any of you tried this stuff before? whats it like? my friend gave me a little square piece of paper today he told me it was like acid and it was called DOB ive never heard of this stuff before but all i can say is i feel GRRRREEEEAAATTTTT ive been tripping for over 8 hours now and dont feel like im coming down at all who knows how long im gonna be tripping for. also is $10 a hit a good price?