Happened to me at the zoo.
We smoked way too much of some decent bud at a pit stop right before the zoo. When e pulled into the zoo parking lot about 10 minutes later it hit me it hit me like a truck. My vision started to blur and I was having trouble focusing. The only other thing similar to the feeling was when i had a severe concussion from hockey. I first blamed it on my contacts but realized that they were fine and that wouldn't explain the spinning. The thought of attributing it to the bud was startling to me because it was the first time it had happened to me that I was consciously aware of. Then I felt the pressure pushing down on me as if I was under a shit ton of water. Then I knew it was the bud and was cool with it.

Of yeah and first post