"I've been on Mars for five minutes and already my brain hurts."

As one woman complained, "My brain hurt when I was done."

Frankly, understanding the differences between all of these formats makes most people's brains hurt.

It made his brain hurt just thinking about it.

My brain hurts after trying to read that.

You're making my brain hurt just a little bit here.

But Cess's brain is hurting a little right now.

My brain hurts that he could be so traduced.

"Nurse," he said, not for an audience this time, "my brain hurts."

If your brain doesn't hurt yet, keep reading: it will soon enough.