My roommate and I ate three or four and waited for a while, and nothing happened. So we ate some more, and we must have eaten ten or twelve each. After a while I began to feel really sick to my stomach, and wound up on my hands an knees in the shower just praying it would stop. I threw up forcefully, I mean, forcefully, and the sick feeling finally faded, almost gone. My roommate had gone to his room, and aside from a "you ok" now and then, we didn't talk the rest of the night. I turned out all of the lights, got comfortable on the couch, had on some new age music on low in the background and started tripping. The shadows on the wall began moving in a graceful way, and I felt like I was floating. For a while I felt the presence of a recently deceased relative, and felt happy and comforted. This part of the night was really cool, really nice, not overpowering trip. It was kind of like an acid trip, but no jitters or nervousness, and not overwhelming. All in all, I'm glad I did it, but not sure I would again, unless ther would be a way to lessen the sick period. There is a site called erowid that has a section on these seeds and it seems that if you can ingest them without the shells, the sickening effect is avoided. Check out this link:
http://erowid.com/plants/hbw/hbw.shtmlSan Pedro cactus has kind of caught my attention as well. Oh for the days of plentiful mescaline.
on edit: there is also a section on morning glory seeds, with which I have no expreience. Here is the link to the main page of Erowid, with many substances listed and tons more in the drop down menus.
http://erowid.com/psychoactives/psychoactives.shtmlI love that site because it is so informative, and even has hints on dosage and trip reports from others who have experienced whatever the substance is.