Brain Bean
Adderall acquired from someone with ADD taken in order to perform better in an academic setting.
Usually I sleep through math class but since I popped that brain bean I'm excited to learn. I even know how to solve problems using formulas I don't remember learning.
Bean brain
A mildly stupid person. A step up from retard, but not quite moron.
Oh, come on, you bean brain! Everybody knows Elton John is gay!