Did I smoke laced weed?

A little while ago I bought this .7 joint from a guy I didn't know, and me and my buddy smoked the thing a few hours later. My friend said he saw a piece of tobacco in it because he packed a little more of his own weed into the j, but I just wanted to blaze, so we smoked it anyway. At first I just felt a normal high, but then after a while weird things started to happen. As I waked down the street cars were going in and out and distorting and stuff. Then random patterns and pictures that didnt make any sense started flying toward my vision, and if I closed my eyes I could still see them. By this time my throat was super dry and I couldn't even spit. I thought I was dying of dehydration. We still had another 30 min of walking before I got to my buddies house. As we were walking (this is the most ****** up thing that happened) my vision turned x-ray and the friend I was walking with turned into a skeleton, and his limbs had purple, see through lightning volts over them. When we got to his house I chugged two bottles of water, looked in the mirror (my eyes were purple) and ped out on his couch. Was I just baked out of my mind, or did I smoke laced weed? BTW I have greened out before and not had hallucinations.