Last weekend I bought a 10-strip for 45 and me and 3 friends took 2 tabs and waited... about 3 hours or so later it hits us but different... it didnt feel like normal acid, we just laughed alot and had strong body feelings with a little visual hallucinations. we were playing a video game with music in the background I heard completely different music playing then what really was, i was hearing like some alien sounding music. it felt like I kept falling out of my chair and at some points it felt like my body was exploding from the inside out. It was really wierd and didnt feel like acid... what other possible thing could it be? it was on blotter paper.
sounds like acid to me, but your description's vague. Are you really 15? Damn I didn't find acid until I was 18.
I know from personal experience that its hard to find a trustworthy person selling pure LSD opposed to imitation BS. Sounds like bull to me man, I took6 hits and I tripped for like an hour after 3 hours of waiting. That shit sucks. >.<