Mad Scientist
When you’re so obsessed with studying that you keep talking to yourself like a crazy person, even when you’re not studying anymore.
My sister was a mad scientist before her test and now she’s still saying 'Photosynthesis!' in the shower.
I was a mad scientist last night and I said 'The Bill of Rights!' to my cat.
My brother is a mad scientist because he keeps saying 'The periodic table!' while he eats.