Smoking pot while tripping on acid is a good thing. It tends to smooth the trip out. I always smoked when I tripped (it's been a long while, I found LSD and motherhood didn't mix well for me). There is a small problem after you have gotten down from your trip-- if you smoke weed after tripping, the chances of a flashback are greatly increased. For the most part, these flashbacks were fairly mild, but every once in a while, WHEEEEEEEEE!!! Right back into understanding the meaning of the universe.