She was written to be 'stupid mother'. The laws of logic were ignored in favor of bad comedy. Even assuming she lost brain cells and didn't know what a pot brownie is, what kind of (especially prestigious) campus has people selling pot brownies openly and to people's moms? And since when do pot brownies work that fast and cause that extreme of a reaction from two bites? And why wouldn't she listen to her husband saying that the brownies were no good? Nobody in this film acts like a real person.

Most excellent. *grins*