My doctor diagnosed me with dyslexia.
He said it's a Brian condition.

I recently discovered I can move my sister's
daughters through the air with my brain. I think I have telekinieces.
( insert groan here )

Little Johnny examines his testicles while taking a bath. "Mom," he asks, "are these my brains?" "Not yet," she replies.

What happens when you cross a brain tumor with a German sausage?
The wurst headache ever.

https://www.youtube.com/watch?v=h81Ojd3d2rY