the very first few times that i smoked weed, it was trippy as fuck for me. this was the first "drug" that i had tried, and the experiences i often had in my initial stages, prior to any psych experiences, were very psychedelic. Now, after experiencing psychs, i would totally relate those particular weed experiences to a shroom experience (not as long obviously).
THis is what i experienced: My body and my consciousnes felt like they were dying and being re-born every moment of existence. I literally felt like i was manifesting every nanosecond, and then disappearing into an emptiness every nanosecond, simultaneously. It was anaologous to blinking your eyes in a way. every time the eyes are blinked, the eyes in a way, reset their vision. Similarly, my reality was coming into existence, and being constantly reset, in a "blinking" motion..it was fucking weird. There was also quite a bit of time dilation.
After those initial periods, i have never again in my life experienced such occurances, even on some very chronic weed. When i told my friends about it, they said that the weed was probably laced with some other shit. And my friends didn't understand what i exactly meant, since they were major potheads, and weed high had become their "natural sober state," so they obviously never experienced sopmething like this from weed.
idk if it was laced or not, but i don't think so cuz no one else besides me experienced this.
Another thing i have noticed, is that after a shroom trip especially, upon smoking weed, some of the aspects of the shroom trip come back, as in a flashback of a sort.
but i believe weed can def be trippy as hell, especially McKenna style in silent darkness, on chronic weed or hash, after a long break from MJ