colic, cowlick

Colic or colic means spasms of pain in the bowels--
She says the baby cries all night because he has colic, but we aren't sure about it.
You should call the vet at the first sign of colic.

Cowlick or cowlick means a tuft of hair that sticks out, usually in the front or at the top of the head--
He had a cowlick right in front, that gave him a silly look.
He is trying to plaster down his cowlick with some hair gel.

Now that you know that, you can say--
"He doubled over with the colic, and you could see his cowlick sticking out, from above."