I have had the same thing. At 16 I worked for pizza hut, and a drug dealer worked there too. One night we were closing up and we gathered in the back for a smoking session of 3 blunts. This is the first time i had smoked anything but a crappy joint, mind you. Well, after that, the world was moving in frames, liek when a strobe light is on. Also, I hear the sound of children playing, and I ran to the front of the store, and noone was there. It's like when wyou have smoked for a while, then you get a real rush of THC, it just overhwelms you and sends you to bliss. But then it never happens again.