How does one get high without taking anything?

Right before coming home from school, I started feeling funny. I didn’t do anything or take anything, just got really buzzed by the time I got home. My mom said I look like a zombie. :) I had to go for a walk and I still feel funny. A friend of mine did give me a couple of gummies, she said I looked stressed but I’m not…not now anyway. I didn’t understand why gummies would have anything to do with stress?