If you are wondering what a Goober is, there is a picture of one here.
A goober was making his first visit to a hospital where his teenage son was about to have an operation.
Watching the doctor's every move, he asked, "What's that?"
The doctor explained, "This is an anesthetic. After he gets this he won't know a thing."
"Save your time, Doc," exclaimed the man. "He don't know nothing now."