Why is being High So Scary?

I took 3 Hits of Ak-47 Weed out of a JB and apparently i passed out and when i woke up it was weird like i was flying and everything was delayed and slow and when i touch something i didnt feel the thing i was touching but i could feel my fingers and everything was blurred and it felt like i was looking out of a house window...almost like i was watching what was going on on a tv. my friends told me that it would just make me feel really happy. but it was scary, strange and it made me feel immoral. What do you guys think?