Why did the math book look so shabby?

Because it had too many problems!

Professor Punsley's Pun Page 8 is a page of even more problems!

Or if you're feeling brave, visit the page of existential crisis!

And don't forget to check out more puns!

But wait, what's this? A Pun Tolerance Level is reached!

Don't worry, it's just a Pun Master's defense!

But seriously, what's the connection?