Eggs... with extra ham.

I only use “I can’t believe it’s not butter” on my toast because sometimes when I eat breakfast, I like to be incredulous.

How was breakfast, Kevin?
Unbelievable.

That’s right. It’s a breakfast joke; which means that this is the most important joke of the day.

***Jokes stolen from Demetri Martin and Daniel Tosh, respectively.... and respectfully.