I have had a lot of experience with weed, and if the THC content of that cake was high enough, your experience doesn't sound surprising to me at all. This is especially true if you don't have any tolerance built up or just have a sensitive system. I smoked weed with my dad ONCE. He ended up on the bathroom floor in a fetal position. He sh it his pants, and kept saying he felt like he was ”jelly melting into jelly.” I was a heavy smoker and smoked the same stuff and got a little giggly.

It all depends on dosage and how it interacts with your particular system. Weed has a lot of power all on it's own. Don't underestimate it.