Chalkboard Artist T-Shirts

"He was on a roll up to this point."

'It wasn't the humidity, but the heat all along.'

"Now that I've made that perfectly clear..."

'But this is the simplified version for the general public.'

"I'm sorry, Sam, but all of this doesn't add up to a hill of beans."

'But I digress...'

'My formula is incontrovertible proof that there is no such thing as a foolproof formula.'

"Very good!"

'Charles Darwin explains how he came up with the phrase 'Well I'll be a monkey's uncle'.'

'This doesn't leave much room for creativity.'

'But we don't want to prove anything.'

'Even if it doesn't equal anything, it's still very impressive.'

The History Teacher

"I sincerely hope you learned a lesson this time, Mark. Drawing cartoons on your homework will get you nowhere in life."

'The schoolhouse where Mason and Dixon as boys drew their first lines.'

'Every once in a while my right brain throws something in.'

"I've thought about what you said, about how plate tectonics will kill us all!"

I will stop making two people who have nothing in common fall in love.

"Ya know, 'DUH' can be a very hurtful word."

"Finally, after years of work, irrefutable proof that I'm a nerd."

"If a third grader knows the answer, how much of a problem can it really be?"

"I didn't finish the proof but I did write this poem about my struggle."

"I try to write a little bit every day."

'I trust these equations settle the argument, Professor Lang. It's your round.'

"And now, a little theorem for all you lovers out there."

"Draw your own path."

'If your calculations are correct, this completely revolutionizes everything we thought we knew about why chalk squeaks on a blackboard!'

"May I get an equation in edgewise."

'I know! It's what I had last night for dinner.'

"Excuse me, Professor. I think I might have spotted a flaw in your theory!"

Good luck tonight, xoxo, Coach.

'OOO, I've thought of a new one! Two squiggles and a backwards G!'

'May I say it's a great pleasure to present my work to such a distinquished assembly of my colleagues.'

Roentgen tries to figure out what he's discovered.

'Einstein's blackboard as he left it'