I used to chill with a guy who had a similar experience. A friend and I had used some kb (not shake and leaves) to make some butter. We baked it into cookies that turned out to be incredibly powerful. We were all going to go see the film Ong Bak when it came out so since this guy in question was going with a different group of friends he bought 3 cookies off us. We told him how powerful they were and how we were only planning on eating half a piece. Apparently he decided we were complete pussies anyway and decided to eat the whole thing. After 15 minutes of not feeling anything he ate another half. At this point it all hit him and once and he apparently blacked out, but he remembered drooling on himself all night and apparently throwing away the rest of the cookies (one and a half) because he blamed them personally. Of the 5 in my own group who watched the movie on half a cookie only one was unable to handle it and had to go throw up. For the record, Ong Bak is a fucking crazy movie.