Checkup from the neck up 

Suggesting this is a way of saying someone is talking or acting crazy. Used to express disbelief, skepticism, or simple mocking. Indicates a level of ridicule serious enough to move the subject away from what the other person has said, and onto the state of mind of the speaker.

"If you think you can get away with driving 50 more miles with the 'Empty' light on, you need a checkup from the neck up."

Checkup from the neck up by Feb July 30, 2008

Checkup from the Neck up 

A mental health examination.

"Dood needs a checkup from the neck up!"

Checkup from the Neck up by Dr. Shatner June 6, 2004

checkup from the neck up 

When a girl has a nice body, but her face is busted!

Playa 1-"Yo, shorty's body is tight!"
Playa 2-"Yeah, but peep her face. She needs a checkup from the neck up!"

checkup from the neck up by BigBad Wolf June 11, 2006