Clown doctorate

After Bob graduated from Clown College, he wasn’t ready to join the workforce just yet. He couldn’t imagine himself shoveling elephant poop while waiting for his chance at the big top, so he stayed for Clown Graduate School.
He earned his Masters, and picked up his PhD.
Instead of the circus or carnivals, Bobo applied for a research grant.
Over the years, his lab made some amazing discoveries.
The optimal floppy shoe length.
Self-driving clown cars.
Memory rubber for self-folding balloon animals.
But every now and then, for old times sake, he smacked himself in the face with a pie.