good old boy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A man having qualities held to be characteristic of certain Southern white males, such as a relaxed or informal manner, strong loyalty to family and friends, and often an anti-intellectual bias and intolerant point of view.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun idiomatic A male friend or chum, especially a schoolmate; a man with an established network of friends who assist one another in social and business situations; a decent, dependable fellow.
• noun idiomatic, sometimes derogatory A friendly, unambitious, relatively uneducated, sometimes racially biased white man who embodies the stereotype of the folksy culture of the rural southern USA.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a white male Southerner with an unpretentious convivial manner and conservative or intolerant attitudes and a strong sense of fellowship with and loyalty to other members of his peer group